Keysteel for Shaft Locking and Power Transmission

keysteel from Godiva Bearings

Keysteel – Stocked for Trade supply only

Keysteel locks rotating parts to shafts. From pulleys and sprockets to gears and couplings, it ensures torque transfer without slip or shift.

Available in square or rectangular profile, keysteel sits in a machined keyway, holding components fast under rotation.

Godiva Bearings stocks metric and imperial sizes, lengths, and grades. All trade-only. All ready to ship.

What Is Keysteel?

Keysteel is precision-machined steel bar used to fill the keyway between a rotating component and a shaft. It provides a positive drive and prevents relative movement.

We supply:

  • Square: For general use in standard keyways
  • Rectangular: For larger loads or specialist fits
  • Bright drawn or cold finished bar: Smooth and accurate
  • Pre-cut lengths or full bars

It’s a must-have in any transmission build.

What Is It Made Of?

Our keysteel is manufactured from:

  • Mild steel (C1018/C1045) – Easy to machine and strong in service
  • Stainless steel – For washdown or corrosive zones
  • High carbon steel (on request) – For high torque or shock load use

Standard tolerance: h9 for press or sliding fit

Supplied in:

  • 300mm, 1000mm or custom cut lengths
  • Zinc-plated (on request) for corrosion resistance

Where Is Keysteel Used?

It is generally fitted wherever torque needs to be transmitted through a keyed joint. Trade-critical applications include:

  • Gearboxes: Holding gears to input/output shafts
  • Pulleys and sprockets: Locking drive parts on motors or drums
  • Conveyors: Aligning rollers and driven shafts
  • Machine tools: Securing rotary tools or spindles
  • Agricultural machinery: Securing wheels and couplings
  • Industrial drives: Positioning and locking rotary components
  • Pumps and fans: Fixing impellers and blades

It’s in almost every rotating drive assembly.

What Does It Help Prevent?

Using the right keysteel avoids:

  • Component slippage on shaft under torque
  • Keyway wear from movement or backlash
  • Shaft damage from misfitting or makeshift keys
  • Lost timing in rotating assemblies
  • Costly downtime from failed mechanical joints

It keeps things locked tight without the drama.

Installation, Use and Maintenance Tips

Fitting tips:

  • Always match the keysteel to shaft and hub keyway size
  • File edges if tight, but don’t force it
  • Use Loctite if specified or for anti-vibration
  • Don’t reuse distorted keys
  • For stainless, use anti-seize to avoid galling

Store sorted and labelled to avoid mix-ups.

Conclusion: Lock It Right

Keysteel is small but critical. It keeps drives locked, loads moving, and parts aligned.

Godiva Bearings supplies  every size, metric and imperial,  — from boxed lengths to cut strips. Always trade-ready.

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DUDLEY: +44 (0) 1384 240 005

NEWCASTLE: +44 (0) 191 272 5225