At Specialty Gear Drives, we specialize in the emergency repair, rebuild, and in-house manufacturing of Gloucester gearboxes. Our Timken-certified technicians restore your unit to better-than-OEM condition — fast.
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Why Your Line Can’t Wait
In the high-volume world of plastics extrusion and blown film, every minute of downtime costs you real money. Gloucester gearboxes are the backbone of film lines across America — and when one fails, you need a partner who can move fast.
At Specialty Gear Drives, we’ve built our entire shop around getting your Gloucester unit back online quickly. We disassemble, diagnose, repair or manufacture parts in-house, and return your gearbox certified and warranted — often in days, not weeks.
Root Cause Analysis
Gloucester gearboxes endure extreme operating demands in film and plastics applications. Our diagnostics team pinpoints the exact failure mode before any work begins.
Constant torque fluctuations in extrusion and blown film applications accelerate surface fatigue, leading to pitting and eventual tooth collapse under load.
Thrust bearing collapse from axial load spikes is one of the most common failure points on Gloucester units. We replace all bearings with Timken-certified equivalents or better.
Continuous high-speed operation and inadequate lubrication intervals cause thermal expansion, seal degradation, and accelerated internal metal fatigue.
Failed shaft seals and worn housing gaskets allow lubricant to escape, introducing contaminants into the gear mesh and stripping the protective oil film from critical surfaces.
Misalignment and shock loads from die head blockages cause shaft bending or fretting corrosion at bearing journals — requiring precision reconditioning or new shaft manufacturing.
Bearing seat wear in the housing causes bearing migration and misalignment cascades. We restore bores to exact specification using precision line-boring equipment.
Process polymer migration into the gearbox through worn input shaft seals introduces abrasive particulate, accelerating gear and bearing wear throughout the drivetrain.
Abnormal vibration signatures typically indicate worn gear mesh, loose internal components, or imbalanced shafts — each diagnosed and corrected during our full rebuild process.
In-House Manufacturing Capabilities
If a Gloucester gear or shaft is beyond repair, we manufacture a new one on-site. Our CNC gear-cutting center produces all profiles needed for Gloucester and DSX-series gearboxes.
Our Proven Method
A disciplined, step-by-step rebuild process means no shortcuts, no surprises, and a gearbox that comes back performing better than before.
We arrange no-cost freight pickup anywhere in the US. Upon arrival, your Gloucester gearbox is immediately logged and assigned to a dedicated technician for full disassembly.
Every component is thoroughly cleaned in our industrial parts washer, then individually measured and inspected. We document all wear, damage, and dimensional deviations in detail.
Magnetic Particle Inspection reveals subsurface cracks in gears, shafts, and housing that visual inspection would miss — eliminating the risk of hidden failure after reassembly.
Worn or damaged Gloucester gears are manufactured on-site to original specifications using our precision CNC gear-cutting equipment, including helical, spur, bevel, and worm profiles.
The gearbox is reassembled with all new Timken-certified bearings, seals, and gaskets. Housing bores are line-bored to exact specification and coated with a high-temp polymer coating to reduce overheating.
Every rebuilt Gloucester gearbox runs a full load test on our custom test bench, monitoring for vibration, leaks, and thermal output before being certified with our 24-month production warranty.
The Specialty Gear Drives Promise
We manufacture Sumitomo gears on-site — including Cyclo-series profiles. No OEM backorders slowing your repair down.
Pickup and delivery at zero cost anywhere in the US. We handle all logistics so you focus on getting back online.
Every Sumitomo rebuild is covered from the moment it returns to production — the strongest guarantee available.
We manufacture Sumitomo gears on-site — including Cyclo-series profiles. No OEM backorders slowing your repair down.
Our technicians carry the same certifications required by OEM service centers — applied to every Sumitomo gearbox that enters our shop, from compact Cyclo units to large-frame Paramax drives.
We never press bearings. Thermal shaft shrinkage and a superheated bearing dropped into place creates a perfect interference fit without stress — matching or exceeding Sumitomo's own installation standards.
Sumitomo drives are used in critical applications where every hour of downtime has a price tag. Our emergency team is on call around the clock to expedite any repair when production is at risk.
Our repair coordinators — all experienced former gearbox technicians — can often diagnose your Sumitomo failure over the phone before it ships, saving you critical hours in the repair timeline.
Industries Served
Don’t let a failed gearbox shut down your production line. Call Specialty Gear Drives for a free quote, free pickup, and the fastest turnaround in the industry.