Gloucester Gearbox Repair & Rebuild

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

    Is Your Gloucester Gearbox Down?

    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

    Common Gloucester Gearbox Failures

    Gloucester gearboxes endure extreme operating demands in film and plastics applications. Our diagnostics team pinpoints the exact failure mode before any work begins.

    Gear Tooth Wear & Pitting

    Constant torque fluctuations in extrusion and blown film applications accelerate surface fatigue, leading to pitting and eventual tooth collapse under load.

    Bearing Failure

    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.

    Overheating

    Continuous high-speed operation and inadequate lubrication intervals cause thermal expansion, seal degradation, and accelerated internal metal fatigue.

    Oil Contamination & Leaks

    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.

    Shaft Damage

    Misalignment and shock loads from die head blockages cause shaft bending or fretting corrosion at bearing journals — requiring precision reconditioning or new shaft manufacturing.

    Housing Bore Wear

    Bearing seat wear in the housing causes bearing migration and misalignment cascades. We restore bores to exact specification using precision line-boring equipment.

    Polymer Contamination

    Process polymer migration into the gearbox through worn input shaft seals introduces abrasive particulate, accelerating gear and bearing wear throughout the drivetrain.

    Vibration & Noise

    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

    Gloucester Gear Types We Manufacture

    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.

    Helical Gears
    Double Helical Gears
    Herringbone Gears
    Split Herringbone
    Bevel Gears
    Spiral Bevel Gears
    Spur Gears
    Ring Gears
    Internal Ring Gears
    Rack & Pinion
    Worm Gears
    Double Enveloping Worm
    Hypoid Gears
    Screw Gears
    Custom Shafts
    DSX Series Components
    Battenfeld-Gloucester Parts
    Legacy / Obsolete Gears

    Our Proven Method

    The Specialty Gear Drives Repair Process

    A disciplined, step-by-step rebuild process means no shortcuts, no surprises, and a gearbox that comes back performing better than before.

    01

    Free Pickup & Intake

    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.

    02

    Industrial Cleaning & Inspection

    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.

    03

    MPI Crack Detection

    Magnetic Particle Inspection reveals subsurface cracks in gears, shafts, and housing that visual inspection would miss — eliminating the risk of hidden failure after reassembly.

    04

    In-House Gear Manufacturing

    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.

    05

    Rebuild & Bearing Upgrade

    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.

    06

    Load Test & 24-Month Certification

    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

    Why We're The Right Partner For Your Gloucester Repair

    In-House Gear Cutting

    We manufacture Sumitomo gears on-site — including Cyclo-series profiles. No OEM backorders slowing your repair down.

    Free Freight Nationwide

    Pickup and delivery at zero cost anywhere in the US. We handle all logistics so you focus on getting back online.

    24-Month Warranty

    Every Sumitomo rebuild is covered from the moment it returns to production — the strongest guarantee available.

    Save Up To 60%

    We manufacture Sumitomo gears on-site — including Cyclo-series profiles. No OEM backorders slowing your repair down.

    Timken-Certified & Falk School Trained

    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.

    Liquid Nitrogen Bearing Installation

    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.

    24/7 Emergency Rush Service

    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.

    Phone-In Diagnostics

    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

    Gloucester Gearboxes Across Every Industry

    Plastics & Film Extrusion

    Blown Film Lines

    Plastics Recycling

    Industrial Manufacturing

    Mining & Aggregates

    Cement & Construction

    Oil & Gas

    Power Generation

    Restore Your Gloucester Gearbox Today

    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.