Bushes & Hubs
From quick-detachable QD bushings to ATEX-environment stainless steel and precision-splined hubs — Ever Power manufactures the full spectrum of power transmission bushings and hubs to ISO and AGMA standards, with zero-compromise dimensional accuracy and rapid global delivery.
The Critical Interface Between Shaft and Sprocket
A bushing (or bushing bore insert) is a precision-machined component that locks a sprocket, sheave, coupling, or gear firmly onto a shaft — transmitting torque through compressive clamping or keyway engagement. A hub extends this connection, providing the rigid mounting platform between the bushing and the driven component.
Selecting the correct bushing type — QD, Taper Lock, Split Taper, XT, or Splined — determines installation ease, torque capacity, shaft run-out, and how quickly your maintenance team can service equipment in the field. A wrong selection means slippage, fatigue failure, and production loss.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Precision Bore Tolerances to H7/h6
All machined bores held to ISO fit H7 tolerance — ensuring interference-free installation and zero run-out that protects bearings and downstream components.
Full AGMA & ISO Keyway Compliance
Keyway dimensions machined to AGMA 9002-B04 and ISO 773 standards — guaranteeing interchangeability with US, European, and Asian shaft specifications.
Material: Cast Iron, Steel & SS 316L
Standard cast iron (GG25 / Grade 30), carbon steel (C45/1045), alloy steel (40Cr), and 304/316L stainless for corrosive and hygienic applications.
Drop-In Interchangeability Guaranteed
All standard bushing sizes are manufactured to be dimensionally interchangeable with Dodge, Martin, Rexnord, and TB Wood's equivalent products — enabling seamless replacement without re-engineering.
Bushing & Hub Product Families
Every family is engineered for distinct torque capacities, installation methods, and operating environments. Select by type to explore the range.
QD Bushings
Flanged design featuring a fully split taper to deliver superior clamping force on shafts.
View Series
Taper Lock Bushings
Flangeless and compact design utilizing set screws for exceptional self-centering precision.
View Series
Split Taper Bushings
Double-split barrel configuration engineered for high torque transmission and heavy loads.
View Series
Stainless Steel Taper Lock Bushings
Premium 316 grade stainless steel construction optimized for rigorous wash-down environments.
View Series
XT Bushings
Specifically engineered with an extended taper to provide a higher torque rating than standard TL.
View Series
FHPK Bushings
Tailored for fractional horsepower drives, delivering reliable performance in compact machinery.
View Series
Taper Lock Adapter
Designed to seamlessly adapt existing bores to the standardized Taper Lock system specification.
View Series
Steel Hubs for Split Taper Bushings
High-grade machined carbon steel components perfectly matched with split taper bushings.
View Series
Type "B" Steel Hubs
Industry-standard configuration steel hubs for high-durability sprocket and pulley connections.
View SeriesXT Bushing Hubs
Heavy-duty hub engineering specifically paired with XT type tapered industrial bushings.
View SeriesQD Type Weld-On Hubs
Machined weldable structures offering a permanent, high-load capability compatible with QD series.
View SeriesTaper Bore Weld-on Hubs
Engineered for permanent welding on conveyor drums, gear sprockets, and heavy rotors.
View Series
Taper Bore Bolt on Hubs
Provides rigid mechanical bolting alignment to simplify retrofits and conversion engineering.
View SeriesSplined Hubs
High-torque spine engagement profile delivering zero-backlash for precise position controls.
View SeriesApplications of Bushings & Hubs
Our bushing and hub families serve every sector of industrial power transmission — from high-speed packaging lines to underground mining drives.
Bushing & Hub Selection Guide
Use this comparison to shortlist the correct product family for your application. Our engineers will confirm specifications at quotation stage.
| PRODUCT TYPE | INSTALLATION | BORE RANGE | CAPACITÉ DE COUPLE | KEY FEATURE | TYPICAL APPLICATION |
|---|---|---|---|---|---|
| QD Bushings | Split flange + cap screws | 1/2" – 7-7/16" | Haut | Quick removal | Conveyors, pumps, agricultural drives |
| Taper Lock Bushings | Taper interference + set screws | 10 mm – 125 mm | Medium–High | Compact, self-centering | General industrial, fans, pumps |
| Split Taper Bushings | Two-piece split, no shaft removal | 1-1/8" – 6" | Très élevé | No shaft disassembly | Crushers, mining, heavy conveyor |
| SS Taper Lock Bushings | Same as Taper Lock | 10 mm – 90 mm | Medium–High | 316L stainless | Food, pharma, marine, chemical |
| XT Bushings | Extended taper + set screws | 1" – 6-1/2" | Très élevé | Higher torque than TL | High-HP drives, compressors |
| QD Weld-On Hubs | Weld to shaft/drum | QD compatible | Très élevé | Permanent, high load | Conveyor drums, permanent drives |
| Splined Hubs | Spline engagement | Custom | Extremely High | Zero backlash | Servo drives, precision positioning |
| Taper Lock Adapter | Adapts existing bores to TL system | Per series | Moyen | Retrofit / conversion | Upgrading legacy equipment |
From Frequent Failures to Stable Operation:
How Ever Power Thoroughly Solved the Challenges of Bushing and Hub Applications
Bore Tolerances Out of Spec — Resulting in Shaft Slippage
Bushings machined to loose tolerances allow fretting wear between the bushing bore and shaft. The result: progressive backlash, vibration, fatigue cracks in the shaft, and eventual catastrophic sprocket disengagement — often at full load.
Non-Interchangeable Dimensions Forcing Costly Redesign
Sourcing from suppliers who don't adhere to AGMA or ISO standards means bushing bores, keyway widths, and flange diameters that don't match your existing equipment — triggering re-boring, custom adapters, and weeks of engineering rework.
Premature Corrosion in Wash-Down or Outdoor Environments
Standard cast iron bushings in food processing, marine, or outdoor agricultural environments corrode rapidly — seizing on the shaft, contaminating the product line, and requiring emergency replacement within months of installation.
Difficult Removal Causing Hours of Unplanned Downtime
Incorrectly specified bushing types — particularly using standard taper bushings in high-vibration applications — result in bushings that seize and cannot be removed without damaging the shaft or hub, turning a 30-minute maintenance task into a multi-day shutdown.
CNC Bored to H7 — 100% Gauged
Every bore is CNC machined and 100% go/no-go gauged to ISO H7 tolerance before despatch. No batch sampling — every piece is individually verified.
Full AGMA / ISO Dimensional Compliance
All keyways, bore diameters, and flange dimensions are machined to AGMA 9002-B04 and ISO 773, ensuring drop-in interchangeability with all major brand equivalents.
Certified Material with Full Mill Certs
Material certificates (EN 10204 3.1) provided on request. Stainless steel grade 316L with hardness verification for corrosion-critical applications.
Engineering Selection Support
Our technical team assists in selecting the correct bushing type — QD vs Taper Lock vs Split Taper — based on your torque, RPM, shaft size, and maintenance cycle requirements.
1,000+ SKUs in Stock
One of the broadest standard bushing and hub inventories in the market — covering 14 product families from 1/2" bore to 10" bore and beyond, for immediate despatch.
Custom & OEM Manufacturing
Non-standard bores, spline profiles, flanges, and materials manufactured to your drawing from as few as 10 pieces, with full dimensional inspection reports.
Bushes & Hubs Buyer FAQs
Technical and commercial questions answered by our engineering team.
Are your bushings interchangeable with Dodge, Martin, and TB Wood's brand products?
Yes. Our QD, Taper Lock, Split Taper, and XT bushings are manufactured to be dimensionally interchangeable with equivalent products from Dodge (Regal), Martin Sprocket, Rexnord, and TB Wood’s. Bore diameters, keyway dimensions, flange diameters, and set screw patterns match industry-standard AGMA and ISO specifications. We recommend customers confirm interchangeability against their specific part number at quotation stage — our engineers will verify before supply.
What is the difference between a QD bushing and a Taper Lock bushing?
QD (Quick Detachable) bushings use a split two-piece flange that clamps around the shaft via cap screws through the bushing — allowing installation and removal without disturbing other shaft-mounted components. They are ideal for high-maintenance environments. Taper Lock bushings use a precision-matched taper between the bushing OD and the hub bore — set screws pull the bushing into the hub, creating an interference grip on the shaft. Taper Lock is more compact but requires more care during removal. For highest torque with rapid service access, QD is generally preferred; for compactness and lighter torque, Taper Lock is the standard choice.
How do I determine the correct bushing size for my shaft?
The key parameters are: (1) shaft diameter — the bushing bore must match your shaft OD precisely; (2) torque requirement — calculated from your motor power (kW or HP) and shaft speed (RPM); (3) keyway requirement — whether a key is needed and to what standard (AGMA or DIN); (4) the hub and sprocket/sheave you’re mounting — this determines the bushing series (e.g. QD JA, SK, SH, SD, SF, E, F, J, M, N, P; or Taper Lock 1008–5050). Send us your shaft diameter, required torque, and the component being mounted — we’ll specify the correct bushing within 24 hours.
What is the maximum bore size available for QD bushings?
Standard catalog QD bushings cover bore sizes from 1/2″ (12.7 mm) up to 7-7/16″ (188.9 mm) across the full QD series range (JA through P). For shafts larger than this, we manufacture custom split taper bushings and hubs to your exact bore dimension — contact [email protected] with your shaft diameter and torque requirement.
When should I use a Split Taper bushing instead of a QD or Taper Lock?
Split Taper bushings are the preferred choice when: (1) the shaft cannot be disassembled for installation — the two-piece split design allows the bushing to be fitted to the shaft at any point; (2) extremely high torque must be transmitted — split taper designs provide more clamping force per unit length than QD or standard taper lock; (3) the application involves severe vibration or shock loading (crushers, hammer mills) where the split taper’s full-length engagement provides superior resistance to fretting. For routine maintenance environments, QD remains preferred due to simpler service access.
Can you supply stainless steel QD bushings for food processing applications?
We currently supply Stainless Steel Taper Lock Bushings (316L) as our standard hygienic product range — these cover the majority of food, pharmaceutical, and marine applications. Custom stainless steel QD-style bushings can be manufactured to order. For food and pharmaceutical applications we recommend specifying electropolished 316L surfaces and confirming FDA-compliance of any lubricants used during assembly. Contact us to discuss your specific hygienic design requirements.