3349913 XCMG GR2605 motor grader adjustment pad

3349913 XCMG GR2605 motor grader adjustment pad

The 3349913 adjusting shim is a standard metal shim used in engineering machinery for precision adjustment of clearances, distances, or angles. It is primarily used to compensate for manufacturing tolerances and correct accumulated assembly errors to achieve precise positioning between components and ensure that preload or fit clearance meets design requirements.

Core Technical Parameters

Model: 3349913, a standard part number for a specific adjusting shim. Its material, thickness, inner and outer diameters, etc., are tailored to specific assembly positions and adjustment needs.

Material: Commonly used high-quality carbon structural steel (such as 08F, 10# steel), stainless steel, or brass, possessing good flatness, a certain degree of elasticity, and wear resistance.

Operating Temperature: Adaptable to the operating temperature range of conventional engineering machinery, typically -30℃ to 120℃, depending on the material. Within this range, dimensional stability and performance remain unchanged.

Thickness Specifications: Available in various standard thicknesses (e.g., 0.1mm, 0.2mm, 0.5mm, 1.0mm, etc.) or combinations to meet micron-level to millimeter-level precision adjustment needs.

Shape and Size: Commonly found in flat, circular, square, or irregular shapes, with inner and outer diameters and hole positions strictly matching the bolts, shafts, or planes of the mounting location.

Surface Treatment: Typically treated with bluing, phosphating, or galvanizing for rust prevention to reduce corrosion during storage and use.

Core Functions and Roles

As a precision adjustment and compensation element, its core function is to subtly alter the relative position or distance between components by increasing or decreasing its thickness. In the assembly and maintenance of engineering machinery, it is used to precisely set the axial clearance of bearings, the meshing clearance of gears, the centering misalignment of couplings, the separation clearance of friction plates, or to compensate for the cumulative dimensional chain errors of parts such as housing mating surfaces and bearing seats after machining and long-term use. By using one or more adjusting shims, irreversible machining (such as grinding or scraping) of the main parts can be avoided, thus achieving ideal assembly accuracy economically and efficiently, ensuring smooth transmission, reducing abnormal wear, and optimizing load distribution. It is a key detail component ensuring the assembly quality and long-term operational reliability of core equipment components (such as gearboxes, drive axles, and rotary mechanisms).

Suitable Applications

Widely used in the internal components of core assemblies requiring high-precision assembly, such as engines, transmissions, drive axles, slewing bearings, pumps, and motors in construction machinery. Commonly found in critical locations such as adjusting tapered bearing preload, cylindrical gear backlash, hydraulic pump housing end face clearance, and track tensioner clearance. Applicable to all mechanical manufacturing, assembly, and maintenance scenarios with strict requirements for assembly precision.

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17 3454023 Set
18 72637 Lubricating Oil Cup
19 70262 Bolt M20×1.5×70
20 3461703 Locking Plate
21 3454043 Washer
22 3349823 Disc
23 3454033 Washer
24 3349913 Adjusting Shim 0.45
25 3463783 Adjusting Shim 0.18
26 3349903 Adjusting Shim 0.15
27 3516073 Seal
28 3454813 Support
29 70398 O-ring

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