Hansen Gearbox Repair and Rebuild Services
Sumitomo Drive Technologies supports Hansen industrial gearboxes with genuine Hansen parts, original product specifications, and experienced service and engineering support for inspections, repairs, and rebuilds.
Get Hansen gearbox repair support backed by the team behind the product line.
What Our Hansen Repair Services Include
A PARAMAX repair begins with a detailed evaluation of the gearbox and its internal components. The final scope depends on the condition of the unit, the application, and the inspection findings.
1. Unit Identification and Service Review
The Hansen model, ratio, shaft arrangement, mounting configuration, application, operating symptoms, and available service history are reviewed before the repair scope is developed.
2. Complete Teardown and Evaluation
The gearbox is carefully disassembled and its components are cataloged so gearing, bearings, seals, shafts, housings, bases, and internal surfaces can be evaluated.
3. Lubrication and Cooling-System Review
Oil condition, lubrication delivery, contamination, operating temperature, and cooling components are reviewed based on the Hansen gearbox model and application.
4. Gearing, Bearing, and Shaft Inspection
Helical or bevel gearing, bearings, shafts, splines, and related components are checked for pitting, scoring, cracking, spalling, wear, and other damage.
5. NDT and Dimensional Checks
Nondestructive testing and dimensional evaluation may be used to identify hidden defects and confirm whether damaged components can be reused, repaired, or replaced.
6. Genuine Parts and Component Restoration
The repair may include genuine Hansen parts, along with machining or gear manufacturing when damaged components require restoration or replacement.
7. Failure and Application Review
Damage patterns, loading, alignment, lubrication, temperature, and operating conditions are reviewed to help identify the cause of the failure and reduce the risk of recurrence.
8. Precision Reassembly and Testing
The Hansen gearbox is reassembled to the applicable product specifications. Tooth contact, backlash, and shaft end play are checked before final testing.
9. Reporting, Field Service, and Start-Up
Support may include documented findings, repair recommendations, on-site assistance, alignment, installation oversight, commissioning, start-up, and condition monitoring.
The Benefits of Using an OEM for Hansen Gearbox Repair
✓ Access to Original Hansen Product Information
Our team can reference the original Hansen model, ratio, shaft arrangement, mounting position, and design details tied to the gearbox.
✓ Genuine Hansen Parts
Replacement components are selected for the intended fit, materials, loading, lubrication, and operating requirements of the Hansen gearbox.
✓ Engineering Review for Specialized Applications
Vertical, right-angle, cooling-duty, mining, and other heavy-duty Hansen applications may require more than standard component replacement.
✓ Support for Current and Legacy Units
Original product knowledge can help identify older installed Hansen gearboxes and determine available repair, rebuild, parts, or replacement options.
✓ Model-Specific Assembly Requirements
Reassembly can follow the applicable Hansen requirements for gear contact, backlash, shaft end play, sealing, and internal clearances.
✓ One Source for Repair and Ongoing Support
Sumitomo can support the inspection, repair decision, genuine parts, field service, technical questions, and future maintenance needs.
Common PARAMAX Gearbox Problems
Changes in sound, temperature, vibration, lubrication, or gearbox performance can point to internal wear or developing component damage. An inspection can help identify the cause and determine the appropriate repair path.
Increased Noise or Vibration
Changes in sound or vibration may be connected to bearing wear, gear damage, misalignment, looseness, imbalance, foundation concerns, or changing operating loads.
Lubrication or Oil-Flow Problems
Low oil levels, contamination, incorrect lubricant, restricted oil flow, failed seals, or lubrication-system issues can reduce protection and accelerate internal wear.
Overheating or Cooling Concerns
Higher operating temperatures may point to excessive loading, inadequate lubrication, restricted cooling, bearing damage, internal friction, or application-related heat buildup.
Gear, Bearing, or Shaft Wear
Pitting, scoring, cracking, spalling, shaft wear, or bearing failure can affect tooth contact, internal clearances, reliability, and the ability of the Hansen gearbox to carry load.
The visible symptom may not reveal the full extent or cause of the problem. A Hansen gearbox inspection can help determine whether the unit needs maintenance, component replacement, rebuilding, or a complete replacement review.
Hansen Gearbox Repair FAQs
Find answers about Hansen gearbox models, inspections, repairs, rebuilds, field service, and replacement support.
Which Hansen gearbox models does Sumitomo repair?
Can Sumitomo repair older or discontinued Hansen gearboxes?
What information is needed for a Hansen gearbox repair quote?
Can a Hansen gearbox be inspected or serviced on-site?
When should a Hansen gearbox be rebuilt instead of receiving a smaller repair?
When should a Hansen gearbox be replaced?
