252500316 pin for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name: Cotter Pin for Bucket Tooth Locking Pin
Part No.: 252500316
Applicable Model: XCMG ZL50G, ZL50GL Wheel Loader
Matching Parts: Bucket tooth pin 252500317
Material: Low carbon alloy steel (rust-proof treatment)
Matching parts: Bucket tooth locking pin
Installation: Insert into pin hole, spread two legs against pin body for locking
Working Condition: Quarry, hard rock digging, crushed stone handling, crusher feeding
Inspection Items: Dimension inspection, ductility sampling, surface crack inspection

Applicable Scenarios

It matches 2.5m³ and 2.7m³ mining rock buckets for XCMG ZL50G and ZL50GL, widely used in quarry and crusher feeding. It provides locking protection under heavy vibration together with bucket tooth pin. It is a special fastener for mining bucket assembly.

- OEM standard size, diameter and length match the pin hole perfectly. Smooth insertion without trimming
- Ductile low-carbon alloy steel resists brittle fracture during bending, stable locking under cyclic vibration
- Anti-rust coating slows corrosion in outdoor quarry environment and prevents seizure
- Designed for single use. Low cost for replacement during maintenance to eliminate fatigue failure risk
- Final safety barrier for tooth assembly, preventing pin withdrawal and expensive tooth sleeve loss
- Fully matched with pin, sleeve and bucket tooth parts, easy for bulk stocking and order packing
- Ductility test before delivery, stable batch quality for large-volume quarry stock

FAQ 

Q：Can this cotter pin fit other sizes of locking pins?
A：No. It is customized for pin 252500317. Mismatched size leads to poor locking and loosening.

Q：Can used cotter pin be reused?
A：Not recommended. Bending causes internal fatigue. Reuse greatly increases the risk of fracture under vibration. Replace every time.

Q：Why does the cotter pin spring open after spreading?
A：Insufficient spreading or poor ductility. Two legs must be fully spread and pressed against the pin body.

Q：How to deal with rusted seized cotter pin?
A：Apply rust remover and pull slowly with pliers. Do not hammer hard, which will damage the hole of locking pin.

Q：What to check when receiving goods?
A：Verify part number, check cracks and burrs, test bending ductility and verify dimension.

Q：Which has the highest replacement frequency: cotter pin, pin or sleeve?
A：Tooth sleeve wears fastest. Cotter pin is disposable and must be renewed every time the tooth assembly is disassembled.

Q：What happens without cotter pin?
A：Vibration pushes the locking pin out, the tooth sleeve falls off and bucket tooth gets damaged quickly.