Caterpillar E70B Sprocket and E307B/E307C/E308C E307V1 / E307V2 can be universal

Basic Information

Place of Origin:	QUANZHOU FUJIAN
Brand Name:	Caterpillar
Model Number:	E70B/E307B/E307C/E308C/E307V1/E307V2/PC60-1

Minimum Order Quantity:	100PCS
Price:	US25~35/PCS
Packaging Details:	Export wooden pallets
Delivery Time:	Twenty days
Payment Terms:	T/T, L/C

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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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Caterpillar E70B Sprocket and E307B/E307C/E308C E307V1 / E307V2 can be universal

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