The 273100574 Adjustment Shims are a genuine OEM precision spacer set manufactured by XCMG for motor graders and heavy construction equipment. These high‑accuracy shims, also known as thrust washers or adjusting plates, are used to set correct end‑play, bearing preload, and gear backlash on XCMG GR series motor graders. Manufactured from hardened spring steel with precision ground thickness and deburred edges, the 273100574 shim set is designed to maintain exact tolerances in final drives, circle gear supports, and differential assemblies under demanding grading conditions.
The shim set 273100574 is a direct replacement for worn or missing adjustment shims on XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders. Typical applications include final drive pinion preload adjustment, circle drive bearing end‑play setting, differential side gear shimming, and planetary carrier positioning. Each set includes multiple shims of varying thicknesses (typically 0.1 mm, 0.2 mm, 0.5 mm, and 1.0 mm) to allow fine‑tuning of axial clearance.
Incorrect adjustment shim thickness leads to excessive bearing play, premature gear wear, noise, and eventual component failure. Replacing damaged or missing shims with the genuine XCMG 273100574 set restores factory tolerances, optimizes bearing life, and ensures quiet, efficient drivetrain operation.
| Parameter | Specification |
|---|---|
| OEM Number | 273100574 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Adjustment Shims / Spacers (Set of 10 pieces) |
| Material | Hardened spring steel (65Mn/SAE 1075), tempered |
| Thickness Options (per set) | 0.10 mm (2 pcs), 0.20 mm (2 pcs), 0.50 mm (3 pcs), 1.00 mm (3 pcs) |
| Thickness Tolerance | ±0.005 mm (for ≤0.5 mm), ±0.01 mm (for 1.0 mm) |
| Outer Diameter | 90 mm ±0.1 mm (fits final drive housing) |
| Inner Diameter | 60 mm ±0.1 mm (clearance for shaft) |
| Hardness (Shim material) | 40 – 50 HRC |
| Surface Finish | Precision ground both sides, Ra ≤ 0.8 μm, oil‑coated |
| Flatness | ≤ 0.02 mm across entire surface |
| Corrosion Protection | Zinc‑phosphate coating + rust preventative oil |
| Operating Temperature Range | -40°C to +130°C |
| Standards | ISO 9001:2024, DIN 988 (shim rings) |
| Compatible Models | XCMG GR135, GR165, GR180, GR2003, GR215, GR260, GR300, GR350 |
| Applications | Final drive pinion preload, circle drive bearing end‑play, differential side gear shimming, planetary carrier positioning |
The XCMG 273100574 Adjustment Shims are essential for achieving precise axial end‑play and bearing preload in final drives, circle drives, and differentials. In a motor grader final drive, correct shim thickness determines the preload on the tapered roller bearings. Too little shimming (tight preload) causes overheating and premature bearing seizure. Too much shimming (loose preload) allows the pinion to shift axially, resulting in gear tooth misalignment, noise, and chipping.
In the circle drive assembly, shims set the end‑play of the circle support bearings. Correct end‑play ensures smooth rotation of the moldboard under load. If end‑play is excessive, the circle will tilt during grading, causing the blade to drift and the gear teeth to wear unevenly. The 273100574 shim set allows the technician to dial in the ideal clearance, typically 0.05‑0.10 mm.
Differential side gear shimming using these precision shims sets the correct gear mesh pattern. A poorly shimmed differential will whine, overheat, and fail prematurely. The hardened spring steel construction of the 273100574 shims resists embedding and wear, maintaining the set clearance for thousands of hours.
Each 273100574 shim is produced from high‑carbon spring steel strip, hardened to 40‑50 HRC, and then stress‑relieved. The blanks are stamped from the strip and then precision ground on both sides using a double‑disk grinder to achieve the exact thickness and surface finish. Thickness is measured in‑process using a laser micrometer.
After grinding, the shims are deburred in a vibratory tumbler and then phosphate coated for corrosion resistance. The final thickness is verified using a coordinate measuring machine (CMM) or an air gauge. Random samples are tested for flatness using a granite surface plate and dial indicator. Only shims that meet the strict ±0.005 mm tolerance are accepted.
XCMG’s quality system ensures that every shim set is packaged with a certificate of conformance, listing the measured thickness of each individual shim. The shims are supplied in a labeled box, with the part number and thickness clearly marked on each envelope.
To set bearing preload using the 273100574 shims, first measure the existing clearance. Assemble the housing without shims, then use a dial indicator to measure axial end‑play. Calculate the required shim thickness to achieve the factory preload specification (typically 0.05‑0.15 mm of end‑play for tapered roller bearings).
Select a combination of shims from the set that adds up to the required thickness. The shims can be stacked; genuine XCMG shims have no adhesive layers, so they can be arranged in any order. Install the shims between the bearing race and the housing shoulder. Reassemble and torque fasteners to specification. Recheck the end‑play – it should be within the target range.
For final drive pinion preload, use a torque wrench to measure the rotating torque of the pinion after shims are installed. Adjust the shim pack until the torque falls within the workshop manual range (typically 1‑3 Nm for used bearings, 3‑5 Nm for new). Do not reuse old shims; always use a new 273100574 set for a reliable preload.
Aftermarket shims are often made from soft steel that compresses under load, changing the preload after a few hours of operation. They may also have inconsistent thickness, with burrs that prevent accurate stacking. The genuine XCMG shims are hardened and precision ground, ensuring that the set thickness remains stable for the life of the assembly.
Counterfeit shims may lack proper rust protection, leading to corrosion and seizing between shim layers. The 273100574 shims are phosphate‑coated and oiled, resisting rust in gear oil environments. In addition, genuine XCMG shims are 100% thickness‑tested; counterfeit shims are often out of tolerance. Using genuine shims prevents bearing‑related failures and ensures accurate gear mesh.
XCMG provides a 12‑month warranty against manufacturing defects. Each shim set is marked with the XCMG logo and part number on the packaging. Choose genuine for precise adjustments and long‑term drivetrain reliability.
Incorrect shim thickness can be identified by symptoms such as: final drive whine or rumble (incorrect gear mesh), excessive end‑play measured at the wheel hub, bearing overheating (detected with a thermal camera), and metal particles in the gear oil. If the preload torque is outside specification, the shim pack must be adjusted or replaced.
Preventive shim replacement is recommended during any final drive, circle drive, or differential overhaul. The shims themselves are not a wearable item, but they become crushed or distorted if the bearings have failed. Always install a new 273100574 shim set when rebuilding the assembly, as the original shims may have taken a permanent set.
Keep a 273100574 shim set in your parts inventory. A missing or incorrect shim can lead to catastrophic gear failure within hours. Use the correct shim pack to protect your investment.
The 273100574 Adjustment Shims set is stocked in XCMG regional warehouses in North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 3‑7 business days worldwide. Expedited shipping (1‑2 days) is available for urgent repairs. Bulk orders (5+ sets) receive volume discounts.
Each shim set is supplied in a sealed plastic bag inside a labeled carton, with the individual shims separated by tissue paper to prevent scratching. For large fleets, consignment stock programs ensure immediate availability. Don’t let incorrect shimming compromise your grader’s drivetrain.
Order the genuine XCMG 273100574 Adjustment Shims today and set your motor grader’s bearing preload and gear backlash to factory perfection. These shims are a critical component for final drive, circle drive, and differential reliability. Keep a set in your service inventory for every overhaul, and always replace with genuine XCMG parts.
Upgrade your motor grader’s drivetrain precision with XCMG genuine adjustment shims. Engineered for accuracy, hardness, and stability – order now and experience the quality that keeps your grader quiet and productive.
