Critical Overhaul Detail: The Role of SHIM RINGS (e.g., 0730.004.042) in Setting ZF Bearing Preload

Introduction: Precision Beyond the Bearing

When performing a full transmission overhaul (e.g., on the 4WG200 or 6WG310), simply installing new TAPERED ROLLER BEARINGS is not enough. The ultimate reliability of the repair depends on setting the precise Bearing Preload or Axle End Play. This is controlled by using SHIM RINGS.

This highly technical guide from Tianjin XiaoHang Construction Machinery Co., Ltd. focuses on the procurement of the specific ZF shim rings required for correct bearing adjustment.

Section 1: Why Shims are Essential for Bearing Life

The Difference Between Repair and Disaster

Shims (e.g., SHIM RING 0730.004.042) are thin washers with specific thicknesses (e.g., 1.0mm, 1.2mm, 1.4mm) used to adjust the axial play of the bearing assemblies.

• Too Loose: Excessive play causes vibration, noise, and rapid failure of the new bearings.
• Too Tight: Excessive preload causes overheating and immediate destruction of the bearing.

Section 2: Sourcing the Right Shim Rings

Precision Sourcing Strategy

Bearings like the INDUCTIVE SENSOR 0501.317.160 require precise shimming. You must maintain a comprehensive inventory of shim rings in fine increments (e.g., 0.2mm, 0.3mm, 0.5mm increments) to achieve the correct preload.

XiaoHang Machinery Co. supplies all the specific ZF shim part numbers required for various ZF axle and transmission assemblies. Our 20 years of experience ensures we understand the precise technical application of each shim.

Conclusion: Precision Ensures Longevity

Protect your overhaul investment. Source your high-precision SHIM RINGS from Tianjin XiaoHang Construction Machinery Co., Ltd. to guarantee correct bearing preload and maximum component life.