Home / Rock Drill Parts / For Epiroc 22U Rock Drill, Triangular Spline Bushing, Part Number 3201 1957 03.

For Epiroc 22U Rock Drill, Triangular Spline Bushing, Part Number 3201 1957 03.

Precision Triangular Spline Bushing for Epiroc COP 22U — OEM-Spec Torque Transmission & Wear Resistance

3201 1957 03 is the genuine-design triangular spline bushing engineered exclusively for the Epiroc COP 22U rock drill. It ensures secure rotational force transfer between the drive and shank adapter while maintaining exact alignment under high-impact percussive loads.

Manufactured from hardened alloy steel or high-grade bronze, it delivers exceptional wear resistance, dimensional stability, and low mechanical backlash — directly extending drill uptime and reducing maintenance frequency in demanding mining, tunneling, and quarrying applications.

Key Advantages

  • OEM-equivalent design for Epiroc COP 22U — exact fit and function
  • Triangular internal spline profile for optimized torque transmission and zero-slip engagement
  • Dual-material options: wear-resistant alloy steel (standard) or corrosion-resistant bronze (optional)
  • Precision-ground to ±0.01 mm tolerance — minimizes backlash and protects shank/piston assemblies
  • Validated for high-frequency percussive drilling: withstands >2,500 BPM and extreme vibration
  • Extends service life of adjacent components by up to 35% vs. non-spec replacements

Applications

  • Underground and open-pit mining — continuous high-load rock drilling
  • Hard-rock tunneling and metro construction — where alignment stability is critical
  • Quarrying & aggregate production — abrasive environments with frequent tool changes
  • Rental fleet maintenance — reliable drop-in replacement for COP 22U service programs
  • OEM-authorized repair centers — certified compliance with Epiroc performance standards

Technical Specifications

Part Number3201 1957 03
Compatible ModelEpiroc COP 22U Rock Drill
Spline ProfileTriangular internal (3-lobe)
Material OptionsAlloy steel (hardened, HRC 58–62) or C93200 bronze
Tolerance ClassISO h6 / H7 (tight-fit interference assembly)
Max Operating Temp180°C (alloy steel), 150°C (bronze)

FAQ

Is this bushing an official Epiroc OEM part?
This is a direct-spec replacement manufactured to Epiroc’s original engineering drawings and material specifications — fully compatible with COP 22U service requirements and backed by ISO 9001-certified production.
Will it fit my existing COP 22U without modification?
Yes — designed as a true drop-in replacement. Matches original dimensions, spline geometry, hardness, and press-fit tolerances. No reaming or machining required.
What’s the typical lead time for bulk orders?
Standard lead time is 5–7 business days for in-stock alloy steel versions; bronze variants ship in 10–12 days. Expedited air freight available globally.
How does it compare to generic ‘compatible’ bushings on the market?
Unlike off-spec alternatives, this part undergoes spline profile metrology verification and load-cycle testing per Epiroc’s 3201 1957 03 spec — ensuring ≤0.03 mm backlash and ≥2,000 hrs service life under rated conditions.

Detailed Description

Triangular Spline Bushing (Part No. 3201 1957 03) – Suitable for Epiroc COP 22U Rock Drill

The Triangular Spline Bushing, part number 3201 1957 03, is a specialized wear component designed for use in the Epiroc COP 22U rock drill. This bushing serves a critical role in transmitting rotational force from the drive mechanism to the shank adapter, while also maintaining precise alignment during high-impact drilling operations.

Description

Featuring a triangular internal spline profile, this bushing is engineered for secure torque transmission and minimal play under load. Manufactured from high-strength alloy steel or bronze (depending on version), it provides excellent wear resistance, dimensional stability, and durability under the extreme pressures and vibrations typical in rock drilling environments.

Its precision fit reduces mechanical backlash and protects adjacent components like the shank and piston, extending the service life of the drill and reducing maintenance frequency.

Key Features

  • Part Number: 3201 1957 03

  • Compatible with: Epiroc COP 22U rock drill

  • Profile: Triangular internal spline for optimized torque transfer

  • Material: Wear-resistant alloy steel or bronze

  • Function: Transfers rotational motion and aligns shank adapter

  • Durability: Designed to withstand impact, vibration, and abrasive conditions

Applications

  • Mining and Quarrying – Ensures reliable torque delivery in heavy-duty drilling

  • Construction and Tunneling – Maintains shank alignment for accurate, efficient rock penetration

  • Percussive Rock Drilling Systems – Critical in systems with high-frequency impacts and rotations

Conclusion

The Triangular Spline Bushing (3201 1957 03) is an essential precision component for the Epiroc COP 22U rock drill, offering robust torque transmission, reduced wear, and increased operational stability. Its advanced design ensures optimal drill performance and helps extend the service life of key drilling components.

Ensure COP 22U Uptime — Order Your Genuine-Spec Bushing Today

Stock available. Ships same day. Request bulk quote or technical datasheet.

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