Rear Arm Link Bushing 45x55x42mm (fits JCB) - AM 809/00125
High-quality, induction-hardened rear arm link bushing (tipping link bushing / bucket link bushing) by AM with dimensions of 45 x 55 x 42 mm. This component is dedicated to JCB construction, agricultural, and industrial machinery. Bushings at this kinematic point of the rear bucket endure high friction and bending loads. The use of high-grade wear-resistant steel guarantees a long component lifespan, effectively eliminates play in the pin connection, and restores full precision to bucket operation.
Zonal Hardness 54-62 HRC: The bushing undergoes advanced heat treatment. The outer and inner working layers, with a hardness of approximately 62 HRC, exhibit excellent resistance to wear and housing ovalization caused by operating contaminants (sand, dust). The flexible core of the component effectively dampens vibrations and impacts, preventing the bushing from cracking during work in extremely harsh ground conditions.
Technical Specification:
- Part type: Rear arm link bushing (Tipping link bushing).
- Quality class: High-quality aftermarket replacement compliant with JCB technological specifications.
- Inner diameter: 45 mm.
- Outer diameter: 55 mm.
- Bushing width / height: 42 mm.
- Surface hardness: 54 - 62 HRC.
- Manufacturer/Brand: AM.
- Part number: 809/00125 (80900125).
Compatibility with JCB Machinery:
| Machine Category | Series and Models |
|---|
| Backhoe Loaders |
Series: 1CX, 2CX, 2DX, 3CX, 4CX, 5CX, 3DX, 4DX, 210/212, 214/215/217, 3/3C/3CS, 4/4C/4CN, 3CX Entry Level (Global) |
| Mini Excavators |
Series: 65R, 67C, 804X, 805X, 806X, 808X |
| Rough Terrain Forklifts |
Series: 926, 930, 940, 950 |
| Telescopic Handlers |
Series: 527, 530 |
| Tracked Excavators |
JS Series (Tracked): JS 85, JS85 [T2 SHA], JS80LC CH (2014-2015 models) |
Workshop Tip: Delaying the replacement of worn arm link bushings leads to the so-called housing wear (bore distortion). When the bushing wears down too much, the pin begins to strike directly against the arm structure, causing ovalization of the steel mounting bore. In such cases, a simple bushing replacement is no longer enough, and costly line boring and welding of the arm become necessary.
Golden rules for bushing installation:
1. Always replace in pairs with the pin: Installing a new bushing onto an old, worn pin (which already has material loss or necking) will drastically shorten the lifespan of the new bushing. Always verify the condition of the mating 45 mm diameter pin.
2. Pressing or freezing: Bushings with a hardness of up to 62 HRC are prone to surface cracks if mechanical installation is handled improperly. The best method is pressing the bushing in using a hydraulic press (screw puller) or pre-cooling it in dry ice (thermal contraction), which allows for a smooth installation into the arm housing.
3. Initial lubrication: Before installing the pin, thoroughly clean the internal lubrication groove of the bushing and fill it with fresh lithium-calcium grease enriched with molybdenum disulfide (MoS2). Remember regular maintenance – proper lubrication creates a protective film that repels water and dirt, extending the joint's lifespan by several hundred operating hours.
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