H157812-WN Knife Head Bushing John Deere

H157812 – Knife Head Ring / Protective Bushing, John Deere

The nylon protective bushing H157812 (also known as the knife head ring) is made of durable nylon and is used to protect the knife head in John Deere platform headers. It ensures precise guidance of discs/blades and reduces wear on metal components.

Characteristics:

Type: protective bushing for the knife head (angled), made of nylon

Material: high-strength nylon provides self-lubrication and reduces contact wear

Purpose: protects the knife drum body and guides the knife disc elements during operation

Weight and dimensions: lightweight and compact part; replaces existing bushings at the mounting location.

Compatibility:

Fits John Deere and AGCO-Gleaner headers, including: 625D/630D/635D/640D/620R/625R/630R/635R

730D/735D/740D/745FD, 925D/930D/936D

Also fits Challenger (FDH/FHB/RHB) and other platforms from the 9255 series.

Advantages:

OEM quality John Deere: precise fit and compatibility without the need for adaptation

Long lifespan: nylon construction reduces friction and provides wear resistance

Protection of the drum structure: prevents damage to the metal surface of the knife head

Easy replacement: does not require complicated disassembly for maintenance