Boom Pin Bolt 10277049 10275038 10277056 10275754 11556748 for SANY Truck Crane Spare Parts

Boom pin bolt 10277049 10275038 10277056 10275754 11556748 for SANY Truck Crane Spare Parts

Product Overview

This boom pin bolt is a high-strength connecting fastener designed for the boom assembly of SANY truck cranes. It secures the boom sections and pivot points, ensuring stable load transfer during lifting operations. Manufactured to OEM specifications, it is a direct replacement for the following part numbers: 10277049, 10275038, 10277056, 10275754, and 11556748.

Key Specifications

Material: 42CrMo alloy steel or equivalent high-tensile steel
Surface Treatment: Black oxide, zinc plating, or phosphating (depending on batch)
Tensile Strength: ≥ 1,000 MPa
Hardness: HRC 28–35
Thread Type: Metric fine thread (standard for SANY crane applications)
Coating Thickness: 8–12 microns (zinc plating option)
Operating Temperature Range: -20°C to +120°C
Installation Torque: Refer to SANY service manual for exact value
Compatibility: SANY truck crane models using the listed part numbers
Packaging: Individual anti-rust bag, export carton, or wooden case

Detailed Description

1. Application
This boom pin bolt is used in the boom connection joints of SANY truck cranes. It replaces worn or damaged pins that may cause boom instability, abnormal noise, or safety risks. It fits multiple SANY crane models across different production years.

2. Material & Strength
Made from 42CrMo alloy steel, the bolt undergoes quenching and tempering to achieve high tensile strength and fatigue resistance. This ensures reliable performance under repeated heavy lifting cycles.

3. Surface Protection
The surface is treated to resist corrosion and rust, extending service life in outdoor and harsh working environments. Options include black oxide, zinc plating, and phosphating.

4. Quality Control
Each batch is inspected for dimensional accuracy, thread fit, hardness, and surface finish. We can provide material certificates and inspection reports upon request.

5. Interchangeable Part Numbers
This product is compatible with or replaces the following OEM numbers:

• 10277049

• 10275038

• 10277056

• 10275754

• 11556748

6. Installation Notes

• Clean the pin hole and remove any burrs before installation.

• Apply anti-seize compound to the threads if required.

• Tighten to the torque value specified in the SANY crane service manual.

• Replace the lock nut or cotter pin if applicable.

• Always use genuine or equivalent high-strength fasteners for safety-critical joints.

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