801100336 nipple for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name: Grease Nipple
Part No.: 801100336
Applicable Model: XCMG ZL50G, ZL50GL Wheel Loader
Thread: M10×1
Standard: JB/T7940.1
Material: Carbon steel, galvanized
Style: Straight check-type grease fitting
Function: Inject grease, prevent backflow and dirt ingress
Matching tool: Grease gun
Inspection Items: Thread inspection, flow test, check-valve sealing test

Applicable Scenarios

Mounted on boom, linkage and bucket hinge pins for regular lubrication maintenance. Widely used in quarry, mine, earthwork and cargo terminal with dusty and heavy-duty conditions.

• Standard M10×1 thread, fits original hole directly without re-tapping
• Galvanized carbon steel body, good rust resistance for dusty construction site
• Built-in ball check valve, prevent grease backflow and sand contamination
Smooth oil passage, low injection resistance and less clogging
• Compact size, easy replacement and low cost, regular maintenance consumable
• Batch flow and sealing inspection, reliable quality for bulk stock
• Standard head profile, compatible with common grease gun coupler
• Matches all hinge lubrication points of ZL50G / ZL50GL

FAQ 

Q：What symptoms appear when grease nipple fails?
A：Grease cannot be pumped in, grease backflow, dirt entering bushing and accelerated pin wear, hinge play and abnormal noise.

Q：Failed grease injection always means blocked nipple?
A：No. Check grease gun pressure and caked grease, also inspect internal pin passage first.

Q：Should nipple be replaced if it looks intact?
A：Yes, if high injection resistance and backflow occur, the internal check valve is damaged.

Q：Can grease nipples of different thread sizes be interchanged?
A：Not allowed. Wrong thread will damage the internal thread on pin.

Q：What should be noted during nipple replacement?
A：Clean thread, tighten properly, test grease flow and flush old debris inside passage.

Q：What causes nipple clogging?
A：Dust accumulation, contaminated or caked grease.

Q：What to do after installing new nipple?
A：Inject fresh grease until clean grease extrudes from hinge clearance.

Q：How to extend nipple service life?
A：Clean nipple after lubrication, use qualified grease and avoid over-pressure injection.