Mining Equipment > Shovel - Replacement Parts

SWING PINIONS

• Pinion Shaft Quenched & Tempered.
• Induction Hardened Gear teeth & Spline before finally shot peening the stressed shaft area. The F.E.A. performed on this redesign confirms a 50 x life improvement.
• Pinion can also be supplied fully assembled with Bearing & Cartridge ready to install.

HOIST GEARBOX PINIONS

• Forged alloy steel.
• Case Carburised Pinion, 58-62HRc, precision ground to AGMA 12.
• As per above examples of P&H 4100A Hoist Input Pinion, and Bucyrus495 Hoist Intermediate Pinion.

HOIST ROPE DRUMS

• New Forge Fabricated alloy steel rope drum, Induction hardened 56-58HRc.
• Induction hardened drum seal.
• New Forged Alloy Steel Drum Shafts through hardened.
• Service Exchange and re-lagging available.

HOIST DRUM GEARS

• New Forge Fabricated Drum Gear 330-360BHN core hardness.
• One piece T-section construction.
• Full Contour Induction hardened gear teeth to 54-58HRc and precision ground to AGMA 10 quality.

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Shovel Planetary Gearboxes

P&H 2800XPA, P&H 2800XPB, P&H 4100A, P&H 4100XPB, BUCYRUS 495B, BUCYRUS 495HR, PROPEL & SWING

Hofmann upgraded Planetary Transmissions

New or service exchange. Gain more life from your transmissions

P&H: SWING AND PROPEL TRANSMISSION UPGRADES:

1. Second reduction sun pinion eccentric thrust kit to reduce wear and prevent damage to pinion.
2. Induction hardened 43Tooth propel shaft to 54-56HRc to give substantial fatigue cracking resistance.
3. 43Tooth output spline is upgraded to 47Tooth spline for higher load carrying capacity.
4. Second and third stage ring gears are through hardened and accurately cut to AGMA 10 quality
5. 43Tooth output spline is upgraded to 47Tooth spline for higher load carrying capacity.

SERVICE EXHANGE PROGRAM:

1. Full strip and assessment.
2. Replacement of bearings and seals.
3. NDT inspection of all components.
4. “Failed Steel” repair/replacement.
5. Reassembly and test run.
6. Comprehensive service reports.

BUCYRUS:
HOIST, SWING AND PROPEL TRANSMISSIONS NEW, REFURBISHED AND UPGRADED:

1. Higher quality materials and heat treatment to increase load carrying capacity.
2. SKF bearings for superior quality and life.
3. Form ground gearing to AGMA 12 minimum quality.
4. Higher quality materials and SKF bearings for output pinions.

HOIST & CROWD GEAR BOXES

• Hoist, Swing, Crowd and Propel.
• Overhauled & New.
• Like For Like Replacement Internal Gearing or Upgraded to match todays’ technology of Case hardening by Carburising or induction hardening.
• Full AGMA Quality Inspection carried out on all Gearing.

DIPPER RACKING

• Cast Manganese Steel through hardened.
• Cast Alloy Steel through hardened .
• Forged alloy steel with machined tooth profile through hardened 320-360BHN. Guarantee pitch and accuracy.

CROWD PINIONS & RACKS.

• Forged steel machined, heat treated
• Precision machining of teeth.
• Full range for all makes and models.
• Dipper Racks Cast Alloy or Manganese Steel as per OEM. Hofmann Improved Forged Alloy Steel with machined tooth profile.

ROPE SHEAVES.
• New Forge fabricated design.
• Rebuilt by submerged arc welding.
• Re-profiling to original dimensions.
• Full Contour Induction Hardening to 54-56HRc.

BOOM REBUILDS.

• Striped, Assessed & Evaluated.
• Repaired to remove all cracking.
• Fully stress relieved.
• Finish machined in single setup.

DIPPER AND DIPPER ARM

• Full or partial Rebuilds.
• NDT Inspection & Repairs.
• Onsite line Boring & Welding with the Hofmann Line Boring Machine.
• Pins, Bushes & Link replacements.
• Latch bars & Latch Levers. Full range for all makes and models.

PINS AND BUSHES

• PINS deep case Induction hardened and precision ground.
• Bushes designed and manufacture to suit your field requirements.
• Selections of materials, heat treatment, lubrication groove design & coatings.

SPLINE & SHIPPER SHAFTS REPLACEMENT GEARS

• Replaced With New Or Weld Repaired. Replacement gears and components for all areas of your shovel.

TRACK PADS

• Manganese Steel Up To 18%.
• Alloy Steel quench and tempered.
• Induction Hardened Alloy Steel quench & tempered and then deep case Induction Hardened on running path and in the track connecting bores.