Gear Repair & Replacement Services for Obsolete and Discontinued Gearboxes
Repairs, drop-in and retrofit solutions backed by engineering support to keep your operation running.
Built To Restore Worn Or Damaged Gears
Worn gears, or gear damage requires repair or replacement. Waiting on new components or redesigning systems can extend downtime and put production at risk.
Riverside Spline & Gear, a Sumitomo Drive Technologies company, supports obsolete gearbox replacement with engineered solutions that match your existing system requirements. From drop-in replacements to reverse-engineered units, each solution is built to align with your application, mounting configuration, and performance needs.
What this means for your team:
- Replace units without major system modifications
- Maintain fit, function, and operating requirements
- Move forward even without original documentation
- Reduce delays tied to sourcing or redesign
Explore the capabilities behind repairing and replacing internal gearing without replacing the entire gearbox, including compatibility with existing systems, in-house machining, material readiness, inspection and emergency response.
Engineered to Match Existing Gearbox Specifications
Repaired or replacement gearing built to match dimensional, mechanical, and performance requirements within your existing gearbox.
Restoring or replacing internal gearing for an obsolete gearbox requires more than matching a part number. Key factors such as center distance, shaft alignment, ratios, and load conditions must be evaluated to ensure proper fit and performance. Each repair or gear replacement is completed to integrate with your existing gearbox without introducing misalignment or the need for major modifications.
In-House Manufacturing Capabilities
All repair and machining processes are handled in-house to maintain control over quality, scheduling, and turnaround. Work is performed within a single, coordinated workflow to reduce delays and ensure consistency from start to finish.
Turning
- Multiple CNC turning centers with large capacity capability
- Produces precision blanks and finished components
- Supports continuous operation for high-priority jobs
Milling
- CNC and manual milling for custom geometries and features
- Supports pre-cut machining prior to hobbing, shaping, or grinding
- Enables fast setup changes for varying part requirements
Hobbing
- CNC and manual gear hobbing operations
- Supports internal and external gear profiles
- In-house tooling helps accelerate downstream processes
Shaping
- Gear shaping for internal and external profiles
- Extended stroke capacity for larger components
- Supports higher-volume and complex geometries
Precision Grinding
- OD, ID, and surface grinding performed in-house
- Supports final geometry and surface finish requirements
Gear Grinding
- Dedicated gear grinding center with on-board checking
- Supports tight tolerance requirements
EDM
- CNC wire EDM used for precision keyways and internal features
- Maintains alignment between critical interfaces and components
- Used where traditional broaching or pulling is not suitable
Gear Assembly Services
Assembly reduces the need for on-site fitting and adjustment, allowing components to be installed with greater confidence.
Riverside's assembly services support the integration of gears and components into a complete, ready-to-install solution.
Gears are fitted to shafts using controlled assembly methods, including shrink-fit processes where required, to maintain alignment and interface integrity.
Final checks are performed prior to delivery to confirm fit, orientation, and overall function, helping reduce installation time and avoid issues during startup.
Emergency Gear Replacement
When equipment is down, response time matters. Material availability and in-house manufacturing allow production to begin quickly, reducing delays between order and start.
Work moves through machining, finishing, and inspection within a single workflow, avoiding external handoffs that can slow progress. This supports faster turnaround when downtime is critical.
In many cases, production can begin within hours when material is available, helping teams move forward without extended delays.
We Work Across a Wide Range of Gearbox Manufacturers
Riverside Spline & Gear supports repair and replacement of internal gearing across a wide range of OEM gearboxes. Experience with legacy and discontinued units allows us to evaluate and support applications regardless of the original manufacturer.
- Amarillo
- Baulmuller
- Black Clawson
- Bonfiglioli
- Brevini
- Browning
- California Pellet
- Camco Ferguson
- Cincinnati
- Cone Drive
- David Brown
- Davis Standard
- Dodge
- De’Ran
- Dover
- Drive All
- Eagle Iron Works
- Extruder Gearbox Repair
- Falk Gearbox Repair
- Flender
- Foote Jones
- GE
- Gloucester
- Hansen
- Horsburgh Scott
- Jupiter
- Kissling
- Keller
- Koellmann
- Kone Crane
- Krauss Maffei
- Liebherr
- Lightnin
- Link Belt
- Lohmann
- Lufkin
- Marley
- Mclanahan
- Neptune
- Nord
- NRM
- Nuttall
- Philadelphia
- P&H
- Piv Drive
- Planetary
- Raymond Mill
- Rexnord
- Santasalo
- Saturn
- SEW Euro Drive
- Sterling
- Symetro
- Terex Comedil
- Titan
- Toshiba
- Thyssen
- Voeller
- Werner Pfleiderer
- Westech
- Western
- Winsmith
- Zambello
Connect With Riverside Spline & Gear
Outdated gearboxes create production risk. When critical gearing is hard to source, downtime extends and output suffers. Riverside restores or replaces internal gearing to get your equipment back online without major system changes.