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-Torque Triangular Spline Bushing for Epiroc COP 22U — OEM Equivalent, Extended Service Life

3201 1957 03 is the genuine-spec triangular spline bushing engineered exclusively for the Epiroc COP 22U rock drill. It ensures secure rotational force transmission from the drive to the shank adapter while maintaining exact alignment under high-impact, high-vibration conditions.

Manufactured from wear-resistant alloy steel or bronze (version-dependent), it delivers exceptional dimensional stability, low mechanical backlash, and protection for adjacent components — reducing unplanned downtime and extending total drill system life in mining, tunneling, and percussive drilling applications.

Key Advantages

  • OEM-equivalent design matching Epiroc’s original 3201 1957 03 specification
  • Triangular internal spline profile for optimized torque transfer and zero-slip engagement
  • Dual-material options: high-strength alloy steel (standard) or bronze (high-corrosion environments)
  • Precision-ground tolerances (< ±0.01 mm) ensure minimal backlash and consistent alignment
  • Validated for continuous operation under >2,000 bar impact pressure and 30+ Hz percussion frequency
  • Extends service life of shank adapters and piston assemblies by up to 35% vs. non-certified alternatives

Applications

  • Hard-rock mining & quarrying — maintains torque integrity in abrasive, high-load drilling
  • Tunnel boring & underground construction — ensures shank stability during extended bore cycles
  • Percussive rock drilling systems (e.g., COP, COPRO, ROC series) — critical for synchronized rotation + impact

Technical Specifications

Part Number3201 1957 03
Compatible ModelEpiroc COP 22U
Spline ProfileTriangular internal spline (3-lobe)
Material OptionsAlloy steel (EN 10083-1 C45E) or Bronze (CuSn8)
Hardness (Steel Version)HRC 52–56 after heat treatment
Tolerance ClassISO h6 for inner diameter; H7 for outer diameter

FAQ

Is this bushing an official Epiroc OEM part or a compatible replacement?
It is a certified OEM-equivalent part manufactured to Epiroc’s original engineering specifications (including material grade, spline geometry, and hardness). Not a third-party imitation — fully traceable and tested.
Will it fit my existing COP 22U without modification?
Yes. Dimensionally identical to the original 3201 1957 03 — direct drop-in replacement with no machining or adaptation required.
What is the typical lead time for bulk orders?
In-stock items ship within 1 business day. For orders >50 pcs, lead time is 7–10 working days — all units undergo 100% dimensional and hardness inspection pre-shipment.

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 Uninterrupted Drilling Performance

Order your certified 3201 1957 03 bushings today — backed by ISO 9001 quality assurance and global logistics support.

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