Lightweight collars provide strong connections
A
Ruland Manufacturing product story
Edited by the Engineeringtalk editorial team
Jul 17, 2008
All of Ruland's lead-free yellow zinc parts are plated using a RoHS-compliant trivalent process instead of the noncompliant hexavalent process.
Ruland has extended its line of corrosion-resistant shaft collars to include 316 stainless steel, yellow zinc plating and aluminium with an anodised finish.
Shaft collars in 316 stainless steel are particularly suitable for food processing, medical and pharmaceutical applications where washdown is required and contamination from corrosion must be avoided.
A high level of resistance to chloride corrosion makes these shaft collars ideal for marine applications.
Ruland uses screws made from 316 stainless in these collars.
The yellow zinc-plated shaft collars also offer good anti-corrosive properties but are less expensive than stainless steel alternatives.
All of Ruland's lead-free yellow zinc parts are plated using a RoHS-compliant trivalent process instead of the noncompliant hexavalent process.
Zinc-plated shaft collars have less holding power than their black oxide-finished carbon steel counterparts.
This is due to the reduced coefficient of friction caused by the zinc plating.
However, the performance of zinc-plated parts that use plated, high-strength alloy steel hardware is still greater than that of stainless steel parts.
High-strength aluminium shaft collars with an anodised finish are light-weight and have low inertia.
They can withstand the recommended screw torque to provide similar holding power to carbon steel.
The aluminium collars are supplied with steel screws for higher torque and holding power.
All Ruland shaft collars are single-point faced to ensure perpendicularity and proper alignment.
A precise shaft collar face to bore relationship ensures that components are both properly positioned and not tilted on the shaft.
Collar face perpendicularity also ensures even pressure on interfaced components.
The complete line of Ruland shaft collars also includes type 303 stainless steel, black oxide carbon steel and engineered plastic.
The collars are available in one and two-piece clamp-style designs with bore sizes from 3 to 80mm.
Shaft collars are part of Ruland's complete product line, which also includes rigid couplings with precision-honed bores and five types of zero-backlash motion control couplings: beam couplings, bellows couplings, oldham couplings, curved jaw couplings and miniature disc couplings.
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