What is Oil Seal, a component of machine that seals lubricants, an oil seal is constructed of rubber,garter spring, and an internal case. While preventing the leakage of lubricants,water,or chemicals,an oil seal also prevents the entry of dust and dirt into a machine.
Oil Seal Oil Seal,Ptfe Oil Seal,Auto Oil Seal,Truck Oil Seal Zhejiang Dream Industry Limited , https://www.mlwdream.com
/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>The role of increasing or decreasing gaskets in the repair of walking tractors The role of increasing or decreasing gaskets in the repair of walking tractors
The increase or decrease of the gasket is an additional repair method; if it is used properly during the repair and maintenance of the walking tractor; it will reach a satisfactory effect. It can be said that it costs less; it works well. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
1 Diesel engine gasket increase or decrease. 1) High-pressure oil pump The single-piston oil pump diesel engine oil supply timing is adjusted by increasing or decreasing the gasket. If the oil supply is too early (early angle); diesel engine There will be "Dangdang" knocking sound; start simple rotation; lack of power, etc.; can add oil pump gasket. If the oil supply is late (early angle. 幌窒笫 6 6. 舫撩 fatigue for jealousy Zhan Huang 耆 (1) The card is ç9.
.2) The oil pump is replaced with a new oil pump or a lower balance shaft; sometimes the head of the rotor shaft in the oil pump table cooperates with the small groove of the lower balance shaft end too tightly (due to the depth of the shaft groove); after tightening the oil pump; the rotor The top of the shaft is dead and the balance shaft; at this time, the appropriate gasket can be added; the following balance shaft is easy to change. After a period of operation; if the oil pressure is lacking; and the rotor, the boring head and the lower balance shaft groove in the oil pump table When there is no significant wear; the oil pump gasket can be properly cut.
.3) The main bearing cap is replaced with a new crankshaft, main bearing bush or main bearing cap; sometimes the crankshaft is over-tightened; when the flywheel is pushed and pulled by hand; there is no axial clearance; the main bearing cap pad can be installed. It was found that the flywheel had a small amount of axial sway, the crankshaft Oil Seal (50×80×13) leaked the oil; the V belt was removed; the flywheel was pushed and pulled by hand to find that the axial gap was too large; the gasket should be cut.
.4) In the operation of the variable speed thrust bearing, if the diesel engine speed is high or low (commonly known as a cruise), the fuel consumption is large; the incineration is incomplete, the exhaust is black smoke, etc.; it may be the speed control disc and the thrust bearing gap. Increased. Can add 1 mm thick gasket between the sliding plate and the thrust bearing. Sometimes the gasket is too thick; it will not be able to add the throttle; it should not reach the proper speed; the gasket should be properly cut.
.5) The cylinder head cover may be due to casting errors; sometimes a new cylinder head cover; the decompression shaft head will press the intake valve; the cylinder is formed without compression. In this case, the cylinder head cover can be added. Gasket to handle.
2 The gasket on the chassis increases or decreases. 1) The driving wheel bearing housing is in practice; when replaced with a new drive shaft or bearing housing; the drive shaft is over-tightened; especially the tapered roller bearing; More tight. This is caused by the bearing housing gasket is too thin; should be installed with the appropriate thickness of the bearing seat gasket; padding how much to pull the hub without axial clearance, pinch the steering handle by hand; Self-contained. After a period of operation; because of bearing wear; steering clearance increases; should properly reduce the gasket.
.2) Some shifting springs in the padded gearbox of the spring and seal ring; the working time is long; the spring is shortened and softened; or a few are broken; the appearance of active disengagement is displayed. Under the condition of the spring (in fact, sometimes it is not necessary to buy a new one); you can add a small pad at the bottom of the fork positioning hole or push it into a small round group with a fine cloth; push the spring to slightly expose the positioning hole; Continuous use is good. When the sealing rubber ring on the steering fork wears the oil, it can pull out the original rubber ring; wrap one or two layers of fine cloth on the fork sealing groove; then install the original sealing rubber ring; Oyster sauce.
.3) The fork shaft is padded to purchase a new auxiliary shifting, one reverse or two or three shift fork shaft; sometimes the new shaft is shorter or longer, and the positioning groove on the shaft is deviated from the corresponding gear. Long time can be sawed or polished with a grinding wheel to be longer; however, the fork shaft should be placed on the gearbox body to calibrate; determine which head is sawed. The positioning groove violates the corresponding gear position; that is, when the positioning steel ball falls into the position The gear is not fully meshed; the force will be actively disengaged. If the reverse shifting shaft groove is over the right side; the left end of the fork shaft can be grounded by 1~2 mm, and the corresponding optical pad is added at the right end; The shaft moves to the left; to adjust the corresponding orientation of the positioning groove and the corresponding gear. If the fork shaft is too short, it can also add a light pad imported pump Castel red wine with an outer diameter of 10~12 mm.
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Oil seal also called as dynamic seal is use to prevent leakage of fluid between two components having relative rotary or sliding motion.
Skeleton oil seal is normal for a variety of mechanical bearing, especially the rolling shaft parts, to guarantee the normal work of the bearing and other pure rotational parts. its function is to put the oil cavity and the outside world, photosensitive oil sealing, sealing outside and dust.
U shaped coil is commonly used in the hydraulic cylinder seal, it is a kind of typical lip seals, whether for piston rod, can obtain good effect. Polyurethane u shaped coil is mainly used in hydraulic cylinder, it has good mechanical properties, good oil resistance, is the most commonly used in hydraulic oil cylinder, high sealing material.
Oil Seals type nomarl use TC, TB, HTCL, VC, DC, HTBR, KB, KC, SB, SC, TA, TBC, USH, LBH, UPH, ODU, IDU, WAI, DHS, UHS, UNS, UN, YX, Yx, J, JA -
The type and features of the various rubber materials used in oil seals, such as PU, TPU, CPU, NBR, HNBR, ACM, VMQ, FKM, PTFE, Fabric and so on.
Source: China Bearing Network Time: 2018-01-15