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Shaft and Shaft Accessories

Shaft Accessories



SDP/SI and QBC manufacturer and distribute high-quality precision shafting; specializing in the machining of components with tight tolerances that others can't make. Our capabilities include Swiss machining, milling, tapping, and drilling in aluminum, steel alloys, stainless steel, and titanium. Custom packaging, labeling and J.I.T. deliveries are available.

Custom mechanical assemblies, using our precision shafting with gears, pulleys, bearings, and couplings from our product lines can be made for your application.

Follow the links below for complete product specifications, price and availability, technical information and to download 3D CAD Models directly into your design:



Shaftloc® & Accessories

The Shaftloc® Fastening System


Shaftloc® is a patented fastening system that makes use of a simple two piece construction to secure rotating components to a shaft.

Commercial Bore Reducers

Commercial Bore Reducers


Inch-to-inch and inch-to-metric bore adapters are offered in aluminum and brass in a wide variety of sizes. Bore adapters with thicker walls may have a slot extending into opposite wall for additional flexibility. O.D. and I.D. tolerances are maintained before slitting.

Commercial Hex Hole Sleeves

Commercial Hex Hole Sleeves


Commercial Hexagon Stock

Commercial Hex Hole Sleeves


Precision Locking Hub Bushings

Precision Locking Hub Bushings


Locking hub bushings are designed to fit components with limited hub O.D. and eliminate the need for keys or splines.

Precision Pipe Shafts

Precision Pipe Shafts


Commercial Pontentiometer Shaft Locks

Commercial Potentiometer Shaft Locks


Commercial and Precision Shaft Collars

Commercial & Precision Shaft Collars


Precision Clamp Type Collars

Precision Clamp Type Shaft Collars


Precision Fairloc® Shaft Collars

Precision Fairloc® Shaft Collars


Precision Fairloc® Shaft Collars with integral bearing shim spacer provides more holding strength than set screw collars. Fairloc® Shaft Collars are offered in brass, black oxide finish and stainless steel for 1/8 up to 3/4 size shafts.

Precision Fastlock Shaft Collars

Precision Fastlock Shaft Collars


No tools are required when using Fastlock Shaft Collars. Slide the stainless steel collar to the correct position onto the shaft. It is now locked in place. To release, hold body of collar and pull release ring. This allows the collar to be easily removed.





Commercial and Precision Set Screw Collars

Commercial & Precision Set Screw Type Shaft Collars


Precision Shafts & Drill Rods

Precision Shafts & Drill Rods


Commercial Fairloc® Shaft Reducers and Extenders

Commercial Shaft Reducers & Extenders


Stainless steel precision shaft extensions, inch and metric sized Fairloc® shaft reducers and extenders and stainless steel shaft reducers and extenders are offered in a wide variety of sizes. Other bore sizes not listed are available on special order.




Precision Shaft Supports

Precision Shaft Supports


Commercial Square Hole Sleeves

Commercial Square Hole Sleeves


Commercial Square Stock

Commercial Square Stock



Precision Stroke Adjust and Rubber Bumpers

Precision Stroke Adjust Collars & Rubber Bumpers


Precision Taper Bushings

Precision Taper Bushings













Precision Telescoping Ball Splines

Precision Telescoping Ball Splines


Stainless steel telescoping miniature ball splines are compact in design and feature zero backlash, low inertia and accommodates 1/4 axial motion. These spines may be mated to the S57PY5-… and S57PY4-… series of universal joints to make telescoping universal joints.


Gears, Differentials, Pinions, and Racks Timing Belt, Pulley, Sprocket,
and Chain Drives
Couplings and Universal Joints Shafts & Shaft Accessories Bearings & Bearing Maintenance Tools Motors, Gearheads and Motion Control Speed Reducers and
Right Angle Gear Drives
Clutches & Brakes Linear Guide Components Vibration & Shock Mounts Hardware, Fasteners & Misc. Components

Custom Precision Shafting

Diameter: 1/32" to 1-1/2"
Tolerance: +/- .0001"
Straightness: Up to .0003"/Inch
Length: Up to 12 Feet

If your design calls for a modification to a stock shaft – we can do that too. Journal ends, through holes, threaded ends, chamfered ends, and flats.

Precision Shafting From Stock

Ultra Precision Ground Shafting:
303 Stainless Steel

Hardened Precision Ground Shafting:
• 416 Stainless Steel, Cond. T, Rc 26-32
• Steel AISI C 1060,
  Case Hardened to Rc 60-63
• 420 Stainless Steel,
  Case Hardened to Rc 50-56

Precision Ground Shafting:
303 Stainless Steel, Undersize, Nominal and Oversized Dia.

Solid and Hollow Shafts:
Aluminum 6061-T6, Hard Anodized Rc 60

Shafting:
AISI 1215 Steel, Inch

Hollow Shafts:
AISI 52100 Bearing Steel,
   Hardened to HRC 58…62

Precision Drill Rods:
AISI 1045 Tool Steel, Ground

Drill Rods:
Chrome Vanadium Alloy, Ground and Polished

Hardened Shafts and Rail Supports:
Steel and Stainless Steel, Hardened

60 CASE™ QUICK™ Shafts:
registered trademark of Thomson Industries.

Ball Screws

ACME Lead Screws