Excavator Bucket Teeth KH40TL Replacement Parts

The components of the excavator bucket shaft and bushing

I. Bucket Shaft (The core component connecting the bucket and the bucket rod

Main structure ‌

The shaft body ‌ : It is usually made of high-strength alloy steel (such as 45# steel, 42CrMo) or ductile iron, and its surface may be chrome-plated or heat-treated to improve wear resistance ‌.

Installation hole ‌ : used to fix the pin shaft or bolt, in conjunction with the bucket ear (the connecting ear plate on the side of the bucket) ‌.

Oil trough design ‌ : Some bucket shafts are provided with lubrication holes to facilitate the injection of grease into the liner ‌.

Accessory components ‌

Pin shaft/bolt ‌ : fixes the bucket shaft and the bucket ear, and bears the shear force ‌.

Dust cover ‌ : prevents sand and mud from entering the shaft hole (equipped on some models) ‌.

Ii. Bushings (Wear-resistant Protective Components)

Basic structure ‌

Bushing body ‌ : cylindrical sleeve, materials including bearing steel (such as GCR15), bronze or self-lubricating materials (such as PTFE) ‌.

Oil holes/oil grooves ‌ : Ensure even distribution of grease and reduce friction ‌.

Install the associated component ‌

Cover/retaining spring ‌ : prevents axial displacement of the bushing ‌.

Grease injector ‌ : used for regular grease replenishment (partially exposed bushing design) ‌.

Iii. Collaborative Work Components

The bucket ear plate ‌ : welded to the side of the bucket, it is connected to the bucket shaft through a bushing and a pin shaft ‌.

Lubrication system ‌ : grease gun or automatic oiling device to maintain the lubrication state of the bushing ‌.

Note ‌ : The specific structure may be adjusted due to the model of the excavator (such as caterpillar, Komatsu) or differences in working conditions. Please refer to the equipment manual ‌.