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 — Engineered for Torque Integrity & Long Service Life

3201 1957 03 is the original-design triangular spline bushing for the Epiroc COP 22U rock drill, critical for reliable rotational force transmission and shank adapter alignment under high-impact conditions.

Manufactured from wear-resistant alloy steel or bronze, it delivers minimal backlash, dimensional stability, and extended service life in demanding mining, tunneling, and percussive drilling applications. Precision-ground to OEM tolerances for seamless integration and system protection.

Key Advantages

  • OEM-equivalent design for Epiroc COP 22U — exact fit and function
  • Triangular internal spline profile ensures secure torque transfer with near-zero backlash
  • Dual-material options: high-strength alloy steel (standard) or corrosion-resistant bronze (for humid/abrasive environments)
  • Precision-ground to ±0.01 mm tolerance for optimal interface with shank adapter and drive housing
  • Reduces wear on adjacent components (piston, shank, gear train), lowering total cost of ownership
  • Validated for continuous operation under 2,200–2,800 rpm and 12–18 bar percussion pressure

Applications

  • Underground and open-pit mining — maintains drilling accuracy during prolonged hard-rock penetration
  • Tunnel boring and civil infrastructure projects — ensures consistent shank alignment in variable ground conditions
  • Percussive rock drilling rigs (e.g., jumbo drills, bolters) — withstands high-frequency impact + rotation cycles
  • Retrofit and maintenance programs for aging COP 22U fleets — direct replacement without modification

Technical Specifications

Part Number3201 1957 03
Compatible EquipmentEpiroc COP 22U Rock Drill
Spline ProfileTriangular internal spline (3-lobe)
Material OptionsAlloy steel (hardened & tempered) / Bronze (CuSn8)
Hardness (Steel Version)HRC 58–62
Tolerance ClassISO h6 (bore), H7 (housing fit)

FAQ

Is this bushing a genuine Epiroc part or an aftermarket equivalent?
It is a certified OEM-spec replacement — manufactured to Epiroc’s original drawings and material specifications (3201 1957 03), not a generic copy.
Will it fit my older COP 22U model without modification?
Yes — fully compatible with all COP 22U production variants (2005–present), including pre-2012 serials. No retrofitting required.
What is the typical lead time for in-stock orders?
In-stock units ship within 1 business day; custom bronze versions ship in 5–7 working days. Global express delivery available.
How does the bronze version differ in performance from alloy steel?
Bronze offers superior galling resistance and dampens vibration in wet/abrasive conditions; alloy steel provides higher load capacity and longer life in dry, high-torque applications.

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 OEM-spec 3201 1957 03 bushing today — backed by ISO 9001 quality certification and 12-month functional warranty.

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