Caterpillar E70B Sprocket and E307B/E307C/E308C E307V1 / E307V2 can be universal
Price:
US25~35/PCS
MOQ:
100PCS
Delivery Time:
Twenty days
Brand:
Caterpillar
Product Description
Caterpillar E70B Sprocket and E307B/E307C/E308C E307V1/E307V2 Compatibility
Technical Specifications
Part Number & Compatibility
- OEM Part Number: Typically 4Y-3702 (varies by serial number; verify via Cat® SIS)
- Application: Designed exclusively for the Caterpillar E70B compact excavator, compatible with its undercarriage track chain assembly
Material & Manufacturing
- Material: High-tensile alloy steel (SAE 4140), heat-treated to achieve:
- Surface hardness: HRC 55-60 (induction hardened)
- Core toughness: Impact-resistant to prevent cracking
- Process: Precision forged + CNC-machined; tooth profile laser-verified for optimal track link engagement
Key Dimensions
- Tooth Count: 11 teeth (may vary by production year)
- Pitch: 152mm (6"), matching E70B track chain pitch
- Bore Diameter: Ø80mm±0.02mm (fits sprocket shaft with tight tolerance)
- Mounting Bolts: M20×1.5, torque specification: 450-500 N*m
Performance Features
- Wear Resistance: Hardened tooth surface (depth: 3-5mm) for extended service life in abrasive conditions (e.g., rock, gravel)
- Anti-Shock Design: Optimized root fillet radius to reduce stress concentration
- Sealing Integration: Machined grooves for dual-lipped radial seals (prevents grease leakage/contamination)
Maintenance Guidelines
- Replacement Interval: Inspect every 2,000-3,000 service hours; replace if tooth thickness is worn beyond 15%
- Lubrication: Grease via zerk fittings every 250 hours using NLGI #2 lithium-based grease
- Paired Replacement: Recommended to replace track chains simultaneously to avoid uneven wear/meshing issues
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Quanzhou Jintai Machinery Co., Ltd.,
Location
No.23 Binjiang Avenue,Nan'an City,Fujian Province,China
Contact Person
kelly_wong