on-road driving and to prevent excess wind-up torques in the transmission either one-way or. The FR series by Ringspann is is full face one way clutch used for bolting the face in inch dimension with sprags. Sprags jam when driven and slide when in reverse. The sprag has proven to be one of the stronger points of the compounder assembly. Features: CKF-A is a non-contact one way sprag clutch bearing. Sprag one-way clutches freewheel in one direction, but transmit torque in the opposite direction when the sprags rotate into position and become wedged between the inner and outer races (Vernay et. ) ÙService life Even when torque is applied at the torque capacity in NTN one-way clutch units and the units are engaged over one million times, weNew One Way Roller Clutch Sprag Bearing Assembly **Please verify your transmission before ordering. Moves in Range Other Than One Selected 1) Bad mounts/proper alignment 2) Bent linkage/frozen cables 3) Linkage adjustment (cable and hard rods) D. Picture going to an event such as a concert, fair, basketball or football game, where you pass through a turngate,. Description. Turbulator steels should be here this week and we'll swap them in as well as the sprag, one-way roller clutch and all new thrust bushings and bearings. This ID groove faces the low-clutch drum, NOT the high-clutch drum (figures 10 & 11). one-way roller clutch ML series. ) Roller. Torque: 70 Nm - 2,300 Nm Diameter: 25 mm - 110 mm Rotational speed: 160 rpm - 600 rpm. Allomatic sprags are full-hardened, individually loaded, and made with high-quality maraging steel that provide higher fatigue limits than stainless steel. When going the wrong way the rollers run up the ramp. It bolts to the flywheel. When set in the one-way mode, the Multi-Mode Clutch holds torque in one direction, but releases in a controlled, self-synchronized manner when the direction of torque reverses. 00 - $85. Brand: Tri Component. Usually you find this sprag clutch either in the. . the point of support on which a lever turns. Diameter: 0. The paper explained both the static and dynamic behavior of roller One-Way Clutches (OWC), and described the practical application of esoteric stress equations to the design of roller OWCs. Drawn-cup roller clutches are one-way clutches comprising thin-walled, non-cut outer rings with ramps on the inside diameter, plastic cages, pressure springs and needle rollers. P and CSK. The Design & Functionality of a Sprag Clutch. W (b): 5 to 18 Speed (RPM): 22,500 to 129,375. Made in USA. 2. When the outer ring in the figure rotates counterclockwise relative to the inner ring, the sprag is pushed and inclined, leaving a. One-Way Clutch Roller Bearing - Drawn Cup, FC Series. 6). 2004-01-1151. This Is A New Borg-Warner Low/reverse One Way Roller Clutch Sprag. One way sprag bearing is a kind of bearing that can rotate freely in one direction and lock in the other direction. Allows for a compact design. wheel with a rope around it for lifting things. r 3 lan(2al 7. A roller type sprag member consisting of three main elements, an outer roller half section, an inner roller half section, and an assembly-location pin. The sprag race assembly functions as the outer sprag race and is splined to the 3rd clutch drum (634). 0 Pressure Plate The pressure plate is a spring-loaded device that can either engage or disengage the clutch disc and the flywheel. Roto has a conventional clutch, a sprag. One-Way Clutch A oneway clutch is a holding device which requires no seals or hydraulic pressure to apply. Lo-roller clutch unlocks. Study with Quizlet and memorize flashcards containing terms like The vehicle drivetrain can send power to _______. Description. 1st gear w/ transbrake disengaged - Direct clutches release, sun gear free to rotate anti-clockwise, rear band releases and lo-roller locks. There are at least two types- one is smooth and can be used w/the "HD" 34 element sprag. Sprag Clutch 101. Diameter: 25 mm - 110 mm. 440 60 ft. They are bearing supported, delivered grease lubricated and protected against dust of more than 0,3 mm. Locking. I', rebuilding a 1965 400 switch pitch trans. You can tell the difference easily, roller clutch has flat accordion springs and round rollers, and. one-way roller clutch ML series. Neither A or B, Tech A. All-in-one rolle. The ML Series has a cam and roller structure, and various transmission parts can be easily mounted. 00. The clutch is on, or applied, at low engine and vehicle speeds, when the most slippage between the turbine and impeller occurs. 50 to 60. Sprag-Type One-Way Clutch feature is that the rotation is limited to only one direction rotation by the parts called Sprag mounted between outer and inner rings. Freewheel bearings are characterised by their ability to only turn in one direction which. The type RIZ is an overrunning clutch with the length up to 23 000 Nm. a. One-way clutches offer freewheeling with minimal power loss and excellent resistance to damage from impact shock loads. The extra torque generated can cause a converter to “balloon", or expand in diameter. This means that roller ramp clutches typically must be provided with inner and outer rings to incorporate the ramps, while sprag clutches can operate directly. A. CSK. 981092. Roller and sprag OWC can slip, but this is generally associated with failure. Tech B says that sprag clutches must be serviced as a. What is an example of a one-way clutch? roller clutch. Two oneway clutches are used in the Simpson Planetary Gear Set. 6. Study with Quizlet and memorize flashcards containing terms like Technician A says a simple check valve is used to block a hydraulic passageway. I always figured there was a trade off between the size of the head and the torque holding capability of the one-way bearing, regardless of how it is implemented (spring wound clutch, sprag clutch, roller bearing clutch, etc. Sprag clutches operate against smooth cylindrical surfaces. This imbalance can occur due to uneven distribution of weight on the tire or a misalignment of the tire and wheel assembly. The metal shell of one way sprag bearing contains many rollers, needles or balls, and the shape of its rolling seat (cavity) makes it only roll in one direction, but it will produce great. Oil lubricated clutch suitable as a higher torque alternative to Roller Ramp clutches. On both of these units, this one-way clutch holds in 1st through 3rd gears and freewheels in 4th gear. This CSK8PP one-way ball bearing with sprag freewheel backstop clutch is made of chrome steel, is double shielded, and has a steel cage. Part Number: TCI-373601. In comparison with a one-way clutch of sprag type, the one-way clutch of roller type has an advantage that a manufacturing cost is low but also has a disadvantage that engagement is less reliable. P and CSK. d. One-way clutches. The most common are: Sprag Type One-Way Clutch. NSK. both d. Cylindrical roller bearing(NU10 series, NJ2 Series, N3 series, NN series) 6. More than 2000 standard model of one way bearring over 1000 designations of metric and inch series needle bearings are regularly. $21. Compatible with medium loads and easy to install. The ramped roller style is shown on the right side (like the Xiongda). A roller type sprag member consisting of three main elements, an outer roller half section, an inner roller half section, and an assembly-location pin. Technician A says that hydraulic clutches are used to drive or input a planetary gear component. It resembles a roller bearing but, instead of cylindrical rollers, non-revolving asymmetric figure-eight shaped sprags, or other elements allowing single direction rotation, are used. The first one-way clutch was designed in 1869 for use in a bicycle. Triple Row. A band can be used to hold or drive a planetary gearset. Currently make do with a 72 tooth ratchet. For these reasons, studies on high-performance overrunning clutches have always been the focus of. Contact a supplier or the parent company directly to get a quote or to find out a price or your closest point of sale. 1 to 2 mm in length and 30 ˃ in anglemust be made at the ends of the raceway of the inner andouter rings to facilitate assembly of the one-way clutch (Fig. In other cam-clutch designs, centrifugal force makes the bar cams turn into liftoff to disengage the clutch halves. The architecture of a single clutch transmission can be easily deduced as a simplification of that with dual clutches since, at a certain. In an automatic transmission, a piston inside the drum uses oil pressure to force the clutch pack together, locking the clutch pack’s parts together to facilitate gear shifts. Technician A says that bursting of clutch friction facings is often caused by coasting a truck with the clutch pedal depressed. Min. b. Drawn-cup roller clutches are one-way clutches comprising thin-walled, non-cut outer rings with ramps on the inside diameter, plastic cages, pressure springs and needle rollers. A sprag is a one-way mechanical clutch used in many automatic transmissions as a method of allowing the transmission to smoothly change gears under load. Not Yet Reviewed. One-way roller clutches and one-way sprag clutches are the two forms of one-way clutches. As his spins fine and mine is bound up. Our one-way sprag clutches are great for applications with low to high torque capacity. Study with Quizlet and memorize flashcards containing terms like The torque-carrying capacity of a clutch is determined by:, When a multiple-disc clutch is used as a holding member, the lugs of the unlined plates are splined into, When a sprag clutch locks, the sprags and more. The excitation signal for our system is either a peri-A sprag functions as a one-way clutch and operates similarly to a ratchet tool from your toolbox. MZ20 Sprag One Way Clutch Backstop Bearing MZ-K Shielded For Pulleys Gears Sprockets $80. In the KOYO sprag type one-way clutches, KW and KX Series are selected according to desired application. Refer to the application chart ( Figure 5) and note that, in the Overdrive. What type of planetary gear set has a set of long and short pinions?A sprag clutch bearing is a one way freewheel clutch that turns in a single direction. Quantity Orders as low as 101. The element of the planetary gear set that is connected to the transmission output shaft. Technician B says that an overdrive ratio is a ratio where the first number is less than 1. Lubrication can either be a blessing or a thorn in your side. 2 Nm - 835 Nm. A band can be used to hold or drive a planetary gearset. The FE 400 series is a great option if you need a large number of clutches but can’t sacrifice torque requirements. Actually I don't even know what you could have done to the valve body to make it not move either , that makes even less sense to. The ramped roller style is shown on the right side (like the Xiongda). Technician A says a multi-disc clutch is a holding/application device in an automatic transmission. The sprag clutches don’t need any external control. The respective features are detailed below. Significant contact forces (OWC): roller, sprag, and pawl. 0001 inch. The clutch disc fits between the flywheel and the pressure plate. The input can drive the output in a chosen direction and permit the output to. Bands and roller clutches are holding members. There is an ID groove around the outside edge of the sprag’s outer race. A sprag is a one-way mechanical clutch used in many automatic transmissions as a method of allowing the transmission to smoothly change gears under load. The sprag clutches don’t need any external control. : 1,600 Nm (1,180. These units are often referred to as freewheels, sprags, overrunning, backstop or one-way clutches, depending upon their application. An indexing sprag clutch can also be an added safety precaution in case of a motor or electrical failure. Technician A says the clutch makes it possible to match input and output shaft speeds so gears can be changed smoothly. What are the two types of one-way clutches? 1. 8-inch Converter - High performance with stall speeds from 4000 to 7000 rpm as dictated by your engine combination. Axial loads transfer force in an equal, uniform. It is a mechanical device that allows rotation in one direction but not the other. Thrust roller bearing(293, 294) 10. Bands and roller clutches are holding members. These bearings are good for large orders and low to high torque needs (1 to 2673 Nm). These units must not be subject to axial loading. The outer race has six lobes, and the bearing has a 10 mm inside diameter, a 16 mm outside diameter, and a 10 mm depth. *Center Support, Will be installing a new BorgWarner Lo/Reverse Roller Clutch. 00 mm (0. Allomatic sprags are full-hardened, individually loaded, and made with high-quality maraging steel that provide higher fatigue limits than stainless steel. When it comes to a one-way clutch (OWC), more factors come into play. Precision bearing manufacturer Schaeffler has seen an increase in demand for its one-way roller clutches, including applications on e-bikes (electric bikes) and motorcycles, as well as industrial applications in overrunning clutches for packaging machines and speed compensation devices for. One-way roller clutch > one-way roller clutch ML series. Rotational speed: 160 rpm - 600 rpm. Sprag Clutch Springs Guide. A one way clutch is a holding device which requires no seals or hydraulic pressure to apply. Compatible with medium loads and easy to install. The type of one-way clutch that uses rollers is called a sprag. Figure 3: 4L80-E Overrun Drum. In principle one-way bearings can be found with the most diverse functions. ALL. Type ASK - Combined Roller Bearing and. 41 + GST Each. The sprag design is comprised of a full complement of accurately formed sprags filling the annular space. Technician B says one-way overrunning. with internal bearings full-face indexing. Notice that one side of it has ribs on the outer diameter that fit into the race in the casing. The first design carrier accepts a 38 segment sprag assembly and featured a smooth outer. Mount the clutch ensuring that the shaft drive directionis in the direction indicated by the arrow on the. Drawn-cup roller clutches give. I think what I’m confused about is what they actually. Lots of guys call any one way clutch a sprag. 32 (+GST) Each. Never leave out the 1-2 checkball. Ratcheting OWC cannot slip, they either engage and carry torque or they do not. The three main ways an application uses a sprag clutch to prevent this rotation are: Backstopping; Indexing The overrunning clutch, or freewheel, is a kind of universal part with a one-way drive character, and is widely used in machinery. The two common industrial radial-roller clutch styles are called a sprag and a ramped roller. 5 yrs CN Supplier . MR Series - Utilises a special sprag cage arrangement to allow high speed overrunning of the outer race. mechanically. Other times an axial load can be a reactive load offset from the shaft axis, like a bevel gear. Technician B says free play refers to the distance that a. Rotational speed: 220 rpm - 2,650 rpm. With the thrust washer and snap ring removed, remove the drum. A bearing axial load is a force that acts parallel to the axis of the shaft, sometimes referred to as a thrust load. Built-In Freewheels can either be roller or sprag type freewheels that are predominantly non-bearing supported. Min. one-way roller clutch GLP F7D7 series. A sprag and roller one-way clutch assembly (10) including an outer cage (12), an inner cage (14) and a ribbon spring (16) for use with a clutch having outer and inner races (70, 72). d. Both the inner and outer races are smooth, and there are no notched areas as in a roller clutch. Features ・Uses a cam and roller structure where rollers s. keyless transmission elements » locking assemblies » shrink discs » locking elements » taper lock. Non-separable bearings with either steel or ceramic balls & a standard contact angle of. Complete Sprag Clutch Units. sprag bearing overrunning clutch. and Y. The strongest of the band designs is the. For those who are interested this is the follow up to the other post. In order to familiarize with the structure of a dual dry clutch system one can consider the scheme in Fig. Technician B says that a one-way clutch could be installed upside down and cause the automatic transmission/transaxle to not function correctly. When the unit rotates in one direction the rollers slip or free-wheel, but when a torque is applied in the opposite direction, the sprags tilt. A band can be used to hold or drive a planetary gearset. One Way Bearings are designed to transmit. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. Whether as a standard one-way bearing, a one-way stepper feed, overrunning clutch, or overrunning freewheel, one-way bearings are versatile, both in functionality and usage. Early units, pre-'71, will have the smooth inner race style drum on the right. The pins for the rear band and band lever slide out of the back of the casing. This Sprag Fits A Wide Variety Of. Rotational speed: 160 rpm - 600 rpm. Much less US with the one-way feature fitted. AHL Starter Solenoid Relay for 4-Stroke GY6 Engine 50cc 70cc 90cc 100cc 150cc 200cc 250cc ATV Dirt Bikes Scooters. 19. 4. Hi, I’ve been learning about car mechanics recently and I would like to know how the automatic transmission’s one way clutches work. Several different types of one-way clutches are in use, these include: Roller designs; Sprag designs; Spiral designs; Diode designsIt works with some sprung rollers and centrifugal force to grab the inside of a smooth race. sprag one-way clutch FR series. Just a couple points. Various stators can be ordered for different track conditions, power levels, and vehicle applications. The needles in these bearings roll freely in one direction, but lock to transmit torque when the rotation of the shaft is reversed. Sprags One-way rollers Both A and B Neither A nor B Sprags Technician A says preload refers to the amount of force placed on a bearing before any load is on the bearing. In 1973, Sauzedde [ 1 ] wrote a paper that is commonly considered the benchmark document on roller One-Way Clutch (OWC) analysis and design. Rotational speed: 160 rpm - 600 rpm. New Overdrive One Way Roller Clutch Aka Sprag. Who is correct?, Technician A says the pressure-regulator valve usually has the responsibility for filling the torque converter. In 1997, Chesney and Kremer wrote a paper entitled Generalized Equations for Roller One-Way Clutch Analysis and Design [1]. Above center: Each roller is guided by a single spring and inserted by hand into the sprag. 130. The one-way clutch has two working states that can be switched, engaging and overrunning. While most race-related part breakage isn’t expected, it can be particularly distressing when one failure actually causes another. Will also go with the TransGo TCC Isolator-Conv Regulator Valve, and NOT use the Sonnax Servo release valve. Some vehicle models came with either the standard 4T65E or the 4T65E-HD version for the higher powered engines. This type of bearing is usually supplied already filled with grease meaning it can be used straight away and requires little maintenance or additional grease before use. In 1973, Sauzedde [ 1 ] wrote a paper that is commonly considered the benchmark document on roller One-Way Clutch (OWC) analysis and design. The paper explained both the static and dynamic behavior of transmission that can be attributed to the drag in the disengaged low/reverse (CB1R) clutch. When front pullers are not used, the seating tolerance should be K6. c. 36. Rotational speed: 350 rpm - 3,600 rpm. Sprag clutches are designed to transfer torque in one relative direction, referred to as the “engaged direction,” and to disengage—or “freewheel”—in the other direction. The inner and outer races each have a keyway, and the bearing has an 8 mm inside diameter, a 22 mm outside diameter, and a 9 mm depth. These parts include: • Low one-way roller clutch • Reverse hub assembly • Inner race assembly • Low/reverse clutch return spring • Reverse ring gear and hub • Reverse planetary assembly • Clutches and steel plates You can interchange these compo-nents as a complete set, but never try toSprag Design This sprag-type design overrunning clutch generally consists of an inner race, an outer race, a set of sprags, a sprag retainer, energizing springs, and bearings . , The _____ connect (lock) a member of the gear train to the transmission case. The three main ways an application uses a sprag clutch to prevent this rotation are: Backstopping; IndexingSprag/Roller Clutch, 29-Element, Forward Sprag, Low-Reverse Clutch, GM, 4L60E/700R4, Each. One way bearings are used to transmit high torque between the shaft and housing in one direction and enable free motion in the opposite direction. Whether you know them as a one-way clutch, roller clutch, sprag, or mechanical diode, we have the parts you need and ready to ship. Upon reversal, the cams quickly release (and then tolerate high overrunning speeds). An arrow on the lip indicates the rotational direction that locks the bearings. They are bearing supported, delivered grease lubricated and protected against dust of more than 0,3 mm. The input can drive the output in a chosen direction and Application / Type: Industrial / General Purpose, Other; Bore. 2 Structure of KW Series One-way Clutch Fig. inclined plane (examples) wheelchair ramp, playground slide, sloped road. After looking over both machines we have concluded it to be the primary clutch one way bearing. True. On the other hand, a. PP are sprag type freewheels integrated into 62. Types CSK. The two common industrial radial-roller clutch styles are called a sprag and a ramped roller. PP are sprag type freewheels integrated into 62. 4597–4607, 2015. *Input Sprag assembly W/ a new BorgWarner 29 Element Sprag. James Halderman | Automotive Educational ResourcesThe output can be coupled to either one of the ring gears, with R1 being used in all forward speeds and B in the reverse speed. - riding the clutch pedal. If the low roller fails under load it will send the dirct drum to 3. If the 2-3 flare is not present when the overrun clutch is on, the forward one-way clutch was not holding. one-way roller clutch ML series. ROSTA Tensioner Devices - Maintenance-free tensioner systems for belt and chain drives. . These types of clutches use multiple clutches to make frictional contact with a flywheel of the engine. Compatible with medium loads and easy to install. - 2 inches. Which technician is correct?, Two. In the middle of rebuild and just used the one I. Features ・Uses a cam and roller structure where rollers s. If I was to run a 514 with a blo-thru set up I sure would make that trans bomb proof. Estimated Ship Date: Monday 11/20/2023. This is a standard replacement part. AUTOMATION & IIOT. sprag one-way clutch UK 2RS, UKC 2RS series. , The apply device that is most commonly used as a driving member is a ________. Question 3. Angular contact ball bearing(70 series. In other cam-clutch designs, centrifugal force makes the bar cams turn into liftoff to disengage the clutch halves. 4L80E's also use the "early" style drum and an actual sprag. 00 mm (1. with internal bearings full-face indexing. 5) E4OD forward clutch drum machined out to hold 6 clutches over the stock 5. A variation of this little 6 speed can also be found in late model Dodge Dart 2. Technician A says one-way clutches prevents components from turning in either direction. 3) Trans cooler + temp gauge. The ML Series has a cam and roller structure, and various transmission parts can be easily mounted. 3D Printing & CAD. A sprag clutch bearing is a one way freewheel clutch that turns in a single direction. This functionality is accomplished by a one-piece, quickly detached torque arm fixed to one race. Technician A says a dog clutch utilizes roller bearings held in place by springs to separate the inner and outer race of theclutch assembly. MISUMI. These LLH Holdbacks designed for long life, as the name implies, and they are sealed to protect against airborne contaminants. Designed for press fit installation. It resembles a roller bearing but, instead of cylindrical rollers, non-revolving asymmetric figure-eight shaped sprags are used. . Vacuum Modulators (If Equipped) 1) Late shift 2) Early. The pump housing will only orient one way, since there is only one area of the pump which has two bolts close together. . In 1997, Chesney and Kremer wrote a paper entitled Generalized Equations for Roller One-Way Clutch Analysis and Design [ 1 ]. This type of bearing is usually supplied already filled with grease meaning it can be used straight away and requires little maintenance or additional grease before use. Planetary gear power flow that utilizes more than one gear set to produce the ratios. The combination of their binary nature and how rapidly they change state Roller clutches and sprag clutches can be designed to be either the centrifugally-engaging type or the centrifugally-disengaging type. Style of the OWC (sprag, roller, diode) is an important base, but element length and quantity are as important. As a general rule, Roller Skate as a noun, "This is my roller skate", it is most correct to use two words, not hyphenated. 323. They are used in high-quality ratchets (socket wrench) and are also the reason your car with an automatic transmission won't roll backward down a hill when it is in gear. The sprag. electric motors electric solenoids pneumatic servo motors hydraulic. Also known as drawn-cup roller clutches. If the sprags don’t maintain that constant contact, the clutch could. 10 - $0. When the unit rotates in one direction the rollers slip or free-wheel, but when a torque is applied in the opposite direction, the rollers tilt slightly, producing a. Study with Quizlet and memorize flashcards containing terms like Which of the following torque converter components is attached to the engine flywheel? impeller stator turbine input shaft, The transmission for many hybrid vehicles uses _____to drive and hold planetary gearset elements. It was either wrong part or I could not make it work. A sprag clutch is a one-way freewheel clutch. In principle one-way bearings can be found with the most diverse functions. All of the following statements are true with respect to sprag clutch inspection except: They can be only partially disassembled They can be assembled in any direction They have to be serviced as a. HF TYPE ONE WAY CLUTCH BEARINGS Drawn Cup Roller Clutches Metric Series Regular Clutch and Bearing Assembly (HFL) No Suffix - Stainless Steel Springs KF - Integral Plastic Springs (HF-KF, HFL-KF} HF = Regular Clutch, KF = Integral Plastic Springs, R = Knurl No Suffix = Stainless Steel Springs Toll Free Phone: (800) 332-3256 • Toll Free. 3. The recommended mounting tolerances are h6 on the shaft and H6 in a rigid housing. freewheel one way clutch » sprag clutch » cam clutch » unidirectional clutch. Diameter: 25 mm - 110 mm. The sprag race assembly functions as the outer sprag race and is splined to the 3rd clutch drum (634). The pump housing will only orient one way, since there is only one area of the pump which has two bolts close together. In reality, all of these sprags are not much of an. If one race of the overrunning clutch is securely fixed to a grounded member, so that it cannot rotate, and the other race is free to turn, the free race will turn freely in one direction of rotation, but willInside the stator is a one-way clutch unit that consists of a splined inner race, an outer race fit into the stator, and a sprag, or roller clutch, separating the two. The components consist of a cage, sprags, and a spring. The components consist of a cage, sprags, and a spring. do not use anything that is "STICKY" as this will render your "OWB" useless. So, the statement of Technician is correct. A bolt-together unit can be serviced at the track by yourself. Often, sprag clutches can transmit more torque than other designs of slip or overrunning clutches. That means in the engaged direction, there is no relative rotation allowed between the two components connected by the. com 6 A Sprag Clutch is a free-wheel device having an inner race, and an outer race either of which can be the input or output member. If the stator's one-way clutch spins freely at low speeds, there will be a loss of torque multiplication, resulting in poor low-speed performance. -the clutch is used so that the driven shaft may be started or stopped at will without stopping the driving shaft. These options can all be achieved without sacrificing torque requirements. One - way Roller Clutch The roller clutch has a hub. Mount the clutch ensuring that the shaft drive directionis in the direction indicated by the arrow on the. Procomp Electronics Automatic Transmission Heavy-Duty Intermediate Clutch Outer Races PCE698. Two technicians are discussing one-way clutches. These sprag clutches took the place of some of the old friction clutches. Different kinds of one-way clutch are distinguished by their torsional medium, such as roller, sprag, and wrap–spring. Sprag Overrunning Clutches and the clutch is free, or overruns . Rotational speed: 160 rpm - 600 rpm. Rollers are a sort of construction plant utilized for compacting stuff like soil, gravel, sand, road surfaces, ETC. one-way roller clutch KI-ASK--GFK. A good example is a production line that moves to one position then stops, waits, and then moves one position over.