Piston Pin Bearing
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 STIHL 032 CHAINSAW PISTON PIN BEARING  US $6.50
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 BEARING PISTON PIN NEEDLE CAGE FITS STIHL 084 088 US $10.97
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 KAWASAKI KE100 1986 2000 Piston Wrist Pin Bearing NEW US $9.99
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Hydraulic radial piston motor
A hydraulic radial piston motor with a cam disc and a cylinder block with a number of pistons running in cylinders in the block presses rollers against the cam disc in such a way that a torsional moment arises. The rollers are formed with guide members running in slots in guide units which take up tangential forces. The rollers are mounted in roller cages which are formed with hydrostatic bearings. At their outer end each piston is formed with a part-spherical bearing surface and the roller cage has a cooperating part-spherical bearing surface, which allows angular movements between the roller cages and the pistons in all directions.
In a hydraulic radial piston motor which includes a housing; a cam disc which has an internal cam surface; a cylinder block havng a plurality of radially disposedcylinders; a plurality of pistons, a respective piston being slidably disposed in a respective cylinder; a plurality of roller cages, each roller cage being located between a respective piston and the cam disc, and each roller cage including an outerbearing surface which is shaped as part of the internal surface of a cylinder; two guide units fixedly joined to the cylinder block, each guide unit including radially inwardly directed guide slots.
The guide slots being in register on opposite sides ofeach respective roller cage; a plurality of cam-follower rollers, each cam-follower roller being located in a respective roller cage and having an outer surface which rolls against the internal cam surface of the cam disc, each cam-follower rollerincluding a shaft pin at its opposite ends which mount respective guide bearings, the respective guide bearings being movable in the associated guide slots of the guide units and transmitting tangential forces that act on the cam-follower rollers to theguide units and thus to the cylinder block, the improvement wherein each roller cage and associated piston are separate elements which are movable with respect to one another, each roller cage having an inner bearing surface and each piston having an outer bearing surface constructed such that angular motionstherebetween are possible in all directions, and each roller cage includes a hydrostatic bearing which cooperates with the outer surface of the associated cam-follower roller.
The invention relates to a hydraulic radial piston motor with a number of drive rollers running along an internal cam surface in a motor housing and being urged radially outwardly towards the cam surface by a number of pistons slidably disposedin cylinders in a cylinder block arranged in the motor housing. In one embodiment of such a radial piston motor for heavy duty applications, the pistons are completely relieved of tangential forces by the fact that pins projecting from the drive rollerstowards the cylinder block are provided with bearings which run in radially disposed slots in guide units which are fixedly joined to the cylinder block on opposite sides thereof. Either the housing of such a motor may be stationary and the cylinderblock rotates, or the cylinder block may be stationary and the housing rotates. In the first embodiment the motor is usually intended to be connected to a driven shaft. In the second embodiment it is usually intended to be connected to a wheel or acable drum for a winch or the like.
According to the invention, the pistons running in the cylinders in the cylinder block are formed on a radially outer portion with a part-spherical bearing surface. The drive rollers running against the cam surface are journalled in roller cageswith a cylindrical bearing seat which is constructed as a hydrostatic bearing and with a part-spherical bearing surface which cooperates with the part-spherical bearing surface of the piston. The roller cage is thus able to tilt in all directions aroundthe center of the spherical bearing. Since the roller cage can tilt in this way relative to the piston, the piston is protected from overturning moments caused by movements of the roller cage due to imperfections of the cam curve and guides for therollers.
The pistons of the motor are formed with a throughgoing axial bore which suitably has a greater diameter in its radially outer part than in its radially inner one. The roller cages which support the drive rollers are formed with a guide pinwhich extends down into the outer part of the through-going piston bore having a greater diameter than the radially inner parts thereof. To prevent the roller cages and the pistons from being separated during operation of the motor, the roller cages andthe pistons may be held together by a strong spring which can be attached within the guide pin and to the radially inner part of the piston. The roller cage may be formed so that it surrounds the drive roller over more than 180°, the rollerthereby being fixed in its cage. The cage may also be formed with a surrounding angle smaller than 180°, whereby the roller cage or the motor is provided with other means for fixing a roller in the roller cage or for guiding the roller. Thecylindrical bearing seat for the roller is formed with a defined hydrostatic supporting surface so as to obtain a suitable balancing of the force against the roller. The supporting surface may be defined by grooves which provide gap sealing. The radialcompressive forces, acting on the roller cage and on the piston, are suitably outbalanced hydrostatically to more than 80%, preferably to between 80 and 95%.
In hitherto known embodiments of radial piston motor of the above-mentioned kind, the piston force has been transmitted to each cam-follower roller via a piston rod which is similar in design to a conventional connecting rod. The roller hasheretofore been journalled at its mid-point in a bearing at the outer end of the piston rod and formed with roller ways on either side of the bearing. At its radially inner end, the piston rod has been journalled in the piston. The journalling of theroller means that the length of the roller increases with the width of the bearing in the rod. The width of the roller way in the motor housing becomes wider by a corresponding measure, and its mid-portion is therefore not fully utilized.
About the Author
Zhongyi Hydraulic Motor Company is a professional engaged in radial piston motor,axial piston motor,slewing transmission,danfoss motor,hydraulic orbital motor,hydraulic steering unit. All products are strictly tested before delivery by testing bench and comprehensive testing facilities to ensure the quality.
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Piston Pin $5.45 Piston Pin for 50cc 2-stroke 1DE41QMB engines. |
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Piston Pin Puller $28.95 Drag Specialties Piston Pin Puller Removes pins from all sizes of pistons Won't damage piston or connecting rod |
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Top End Bearing $14.99 Wiseco Top End Bearing When you replace your top end a new Top end bearing is a must. With a new Wiseco Top End Bearing it will keep that wrist pin and rod working perfectly when you put it to the test ride after ride. Click Here for Pro Lite Piston Kit |
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Piston and Pin by Crown Automotive $69.99 2002-07 Liberty;3.7L engine;1999-04 Grand Cherokee;4.7L engine;2005-07 Grand Cherokee;3.7L or 4.7L engine;2006-07 Co mmander;3.7L or 4.7L engine;Standard piston and pin Piston and Pin by Crown Automotive |
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50cc, 2-stroke Piston Pin $6.44 Piston Pin for 50cc 2-stroke Minarelli 1PE40QMB Jog engines Diameter: 12mm Length: 33mm |
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GY6 Piston Pin $5.45 Piston Pin for 150cc and 125cc GY6 4-stroke QMI152/157 and QMJ152/157 engines. Shop the largest selection of scooter parts , gas scooters , electric scooters , and motorized scooters for sale. Diameter: 15mm Length: 41mm |
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Pro Lite Piston Kit $78.99 Wiseco Pro Lite Piston Kit Dedicated forging Race proven designs CNC machined High-performance ring set Highest quality, alloy pin Superior strength/wt. ratio utilizing Aerospace alloy Extended life and sustained power Precision machined, highest quality materials for optimal cam shape & profile for peak HP Chosen by top race teams, in all forms of racing Kit Includes: Pistons Rings Circlips Wrist Pin *Note: Cylinder sleeving required for oversizes. Click Here for Top End Bearing **Closeouts are limited to stock on hand** |
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Wrist Pin Bearing $6.44 10mm wrist pin bearing. Inner Diameter: 10.1mm Outer Diameter: 13.6mm Width: 14.6mm |
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50cc, 2-stroke Piston Pin, 10mm $6.44 10mm Piston Pin for 50cc 2-stroke Minarelli 1PE40QMB Jog engines 10 mm Diameter 33 mm Length |
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Wrist Pin Needle Bearing $5.94 OEM Vento Wrist Pin Needle Bearing. Shop the largest selection of scooter parts , gas scooters , electric scooters , and motorized scooters for sale. Inner Diameter: 12.1mm Outer Diameter: 14.7mm Width: 16.3mm |
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Wrist Pin/Needle Bearing $7.93 Wrist Pin Needle Bearing for 50cc 2-stroke D1E41QMB engines. Shop the largest selection of scooter parts , gas scooters , electric scooters , and motorized scooters for sale. Inner Diameter: 10.2mm Outer Diameter: 13.8mm Width: 12.9mm |
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Piston and Pin Set $98.99 Fits 1941 to 1971 CJ;With 134 4 cylinder F-Head or L-Head engines;.030 oversize JEEP 1-TON PICKUP CJ-2A CJ-3A CJ-3B CJ5 CJ6 COMMANDO DISPATCHER DJ-3A DJ5 DJ5A DJ5B DJ6 F4 FC150 FC170 JEEPSTER M38 M38A1 MB PANEL SEDAN DELIVERY UNIVERSAL UTILITY COMMANDO 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 2.2L (134) 3.8L (232) GAS Piston and Pin Set |
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High Performance 2 Stroke Piston Kit $179.95 Moose Racing High Performance 2 Stroke Piston Kit Moose Racing Products is known for quality motorcycle parts and the Moose Racing Piston Kit are proof. Made to OEM specs, Moose piston kits offer excellent performance and longevity. Forged from 4032-T6 aluminum for ultimate strength, durability, and performance Engineered for maximum weight reduction that enables a faster and more consistent throttle response Newly designed and tested skirt profiles provide extra durability and noise reduction while delivering maximum power Along with the latest skirt profiles, newly designed rings put less tension on the cylinder wall without compromising ring seal Skirt coating acts as a buffer to ensure better wear characteristics Each kit comes complete with a piston, wrist pin, pin bearing, circlips, rings, and a top end gasket kit Made in USA |
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125cc GY6 Piston $26.77 Piston, Pin and Cir Clips for 125cc GY6 4-stroke QMI152 QMJ152 engines. Piston Diameter: 52mm Piston Pin Diameter: 15mm |
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4-Stroke Piston $22.31 110cc, 4-stroke piston commonly found on imported dirt bikes, ATV's, super pocket bikes, mini-choppers, dune buggies/karts and many, many more. Diameter: 52mm Deck Height(as mesured from center of piston pin to top edge of piston): 19.2mm Wrist Pin Size: 13mm Total Height: 37mm |
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Piston & Pin by Crown Automotive for Jeep $98.99 Piston & Pin JEEP 1-TON PICKUP CJ-2A CJ-3A CJ-3B CJ5 CJ6 COMMANDO DISPATCHER DJ-3A DJ5 DJ5A DJ5B DJ6 F4 FC150 FC170 JEEPSTER M38 M38A1 MB PANEL SEDAN DELIVERY UNIVERSAL UTILITY COMMANDO 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 2.2L (134) 3.8L (232) GAS Piston & Pin by Crown Automotive for Jeep |
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150cc GY6 Piston Set $26.77 57mm Piston, Pin, and Circlips for the 150cc 4-stroke QMJ QMI/152 GY6 engine. Shop categories of scooter parts , gas scooters , and electric scooters for sale. 57mm Piston Pin: 15mm Comes with piston, piston pin, and 2 cir clips For 150cc GY6 engines Piston pin opening to top of dome: 14mm |
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Piston and Pin by Crown Automotive for Jeep $98.99 Piston JEEP 1-TON PICKUP CJ-2A CJ-3A CJ-3B CJ5 CJ6 COMMANDO DISPATCHER DJ-3A DJ5 DJ5A DJ5B DJ6 F4 FC150 FC170 JEEPSTER M38 M38A1 MB PANEL SEDAN DELIVERY UNIVERSAL UTILITY COMMANDO 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 2.2L (134) 3.8L (232) GAS Piston and Pin by Crown Automotive for Jeep |
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Piston by Omix-Ada $52.99 1966-71 CJ;225 V6 engine;Piston and pin;.030 oversize |
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piston $9 piston |
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100cc, 4-stroke Piston $27.77 Piston for 100cc, 4-stroke engines. Commonly found on Chinese ATV's, dirt bikes and mini-choppers. Piston width 50 mm Piston Height 44 mm Piston Pin 13 mm 2 cir clips |
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Piston With Pin by Omix-Ada for Jeep $48.99 1941-71;134 4-cylinder engine;.040 oversize JEEP 1-TON PICKUP CJ-2A CJ-3A CJ-3B CJ5 CJ6 COMMANDO DISPATCHER DJ-3A DJ5 DJ5A DJ5B DJ6 F4 FC150 FC170 JEEPSTER M38 M38A1 MB PANEL SEDAN DELIVERY UNIVERSAL UTILITY COMMANDO 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 2.2L (134) 3.8L (232) GAS Piston With Pin by Omix-Ada for Jeep |
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Piston Pin Bushing Set by Omix-Ada for Jeep $47.99 1948-64;226 6-cylinder engine;6-piece set JEEP 1-TON PICKUP FC150 FC170 FC170HD 1954 1962 1963 1964 3.7 (226) GAS Piston Pin Bushing Set by Omix-Ada for Jeep |
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Piston Kit $87.95 Pro X Racing Parts Piston Kit PROX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese engine manufacturers. PROX Piston Kits are a first class solution to replace the original piston in your Motorcycle, Scooter, Moped, ATV, Personal Watercraft, etc. PROX Piston Kits for sleeved cylinders are available in standard size and a wide range of oversizes. The availability of oversizes up to 2mm significantly helps to increase the lifespan of a cylinder by offering more re-boring possibilities. PROX pistons for plated cylinders come in standard size, as well as in A, B, C, D+ oversizes. Take advantage of the additional oversizes to extend the lifespan of plated cylinders. All PROX Piston Kits are supplied complete with Piston Rings, Wrist Pin and Circlips, ready to install! |
