Motion System Design

Product Spotlight: Collars & Hubs

High-tolerance shaft collars

Shaft collars are single-point faced to ensure a high level of face-to-bore perpendicularity, offering runout of TIR less than 0.05 mm.

Features & benefits

  • One and two-piece clamp styles in bores from 3 to 80 mm

  • Aluminum, black oxide carbon steel, stainless steel, and engineered plastic styles available

  • Ensures components are properly positioned and not tilted on shaft as well as even pressure on interfaced components

  • Clamp style does not mar shaft and wraps around the shaft for high holding power

  • Two-piece does not require removal of other components for installation

Ruland Mfg. Co. Inc.
Marlborough, Mass.
(508) 485-1000
Circle 151

Hub and shaft collars

S25FB9 (brass) and S25FY9 (stainless-steel) shaft collars incorporate a built-in bearing shim spacer and feature a Fairloc integral hub fastener.

Features & benefits

  • Fit shafts that are 0.12 to ¾ in. or 3 to 20 mm diameter

  • O.D.s from 0.433 to 1.496 in. or 11 to 38 mm

  • Fairloc hub eliminates marred shafts; permits frequent phase, timing, and position adjustment

  • Cantilevered clamping section accepts cap screw, which passes through hole in hub and into a threaded hole in transverse wedge section

Stock Drive Products/Sterling Instrument
New Hyde Park, N.Y.
(516) 328-3300
Circle 152

Jaw hub

L type jaw hub pairs with most elastomers for coupling applications.

Features & benefits

  • Available in sintered iron, cast iron, steel, and stainless steel

  • Works with an elastomeric insert to compensate for various types of shaft misalignment

  • Available in inch, millimeter, and SAE spline bore hubs

Lovejoy Inc.
Downers Grove, Ill.
(630) 852-0500
Circle 153

Shaft collars with clamp levers

D-cut shaft collars with clamp levers require no tools for installation or maintenance.

Features & benefits

  • Available with 1045 steel black oxide, electroless nickel plating, and 304 stainless steel

  • Accommodate 10 to 20-mm diameters; configurable sizes allow greater range

  • Allow fixturing bar to be attached to flat side

  • Allow fast, flexible adjustments on systems where same machine is used in different configurations

Misumi USA Inc.
Schaumburg, Ill.
(800) 681-7475
Circle 154

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