CAT 394-0209 BEARING-SLV-GD

CAT 394-0209 (3940209) is a Caterpillar genuine YM pin used for rotational/oscillating connections in hinges, linkages, suspensions, and working devices. The following is precise original factory information (pure genuine part, no substitutes):

Core Parameters and Original Factory Information

Item Details
Part Model: CAT 394-0209 YM Pin (Genuine)

Part Type: Solid Pin / Hinge Pin

Material: High-strength alloy steel, overall tempering + surface hardening, wear-resistant, shear-resistant, and impact-resistant

Surface Treatment: Precision grinding + rust prevention treatment, suitable for high-load, dusty, and outdoor working conditions

Key Dimensions: Inner diameter/shaft diameter: approx. 35.00 mm (1.378 in), Length: approx. 150.00 mm (5.906 in), with locating/retaining grooves at both ends, compatible with YM sleeve bearings and retainers

Structural Features Solid round shaft with retaining ring grooves/threaded holes at both ends for axial positioning to prevent movement.

Compatible Structure: Used with YM sleeve bearings (such as 360-2326, 364-5266, 374-8355, etc.) and retainers (308-9805, 380-7408, 6D-4189, 356-5975, etc.).

Applicable Working Conditions: Medium to high load, frequent swinging/rotation of articulated parts, such as boom, stick, connecting rod, steering knuckle, and suspension.

Main Compatible Models (Original Equipment Manufacturer Matching):

CAT 320D / 323D / 320GC series excavators (boom/stick/connecting rod articulation)

CAT 950K / 950M / 962M / 966M wheel loaders (working device/steering articulation)

CAT 120M / 140M / 160M Grader (Tie Rod, Swing Frame, Suspension)

CAT 420F2 / 430F2 Backhoe Loader (Boom, Rocker Arm, Linkage)

Installation and Fitting Points (Original Factory Standard)

With YM sleeve bearings, a clearance fit is used, with a standard clearance of 0.01–0.03 mm to ensure smooth and unobstructed rotation.

Axially position both ends using retaining rings/fixtures/pressure plates; do not use without positioning.

Before installation, clean the journal, bearing inner hole, and mounting hole to remove burrs, rust, and impurities.

Do not strike the pin body; use a special pressing tool (4C-9520 punch, etc.) for cold pressing assembly.

Post-assembly inspection: Smooth rotation/swing, no abnormal noise, no axial movement, and unobstructed lubrication channels.

Maintenance and Replacement Tips

Inspect every 600–800 working hours: Wear, bending, rust, and damage to the retaining ring groove.

If journal wear > 0.10 mm, bending, cracks, or severe rust, replace with original factory parts. 394-0209 The use of non-standard pins is strictly prohibited to avoid rapid wear, breakage, or hinge failure of bearings, bushings, and bore seats.