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Shaft Collars

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Ruland manufactures shaft collars in multiple styles to fit shafts ranging from 1/8" to 6" in the inch series and 3mm to 150mm in the metric series. Ruland shaft collars are available in a variety of materials and finishes including: 303 & 316 stainless steel, black oxide and yellow zinc plated carbon steel, high-strength aluminum, and engineered plastic. Each shaft collar is stamped with the Ruland name and bore size for easy identification.

Extra steps are taken in the manufacture of Ruland shaft collars to provide important performance benefits. For example, they are single point faced (indicated by the circular groove on the face) during the boring operation to insure perpendicularity of the face to the bore. This results in a face runout of TIR ≤ .002" (.05mm) on standard shaft collars with even tighter tolerances on bearing lock-nuts and special designs. Perpendicularity is important for alignment when a shaft collar is used as a load-bearing face, mechanical stop, or for mounting components such as gears or bearings.

One-piece shaft collars wrap around the shaft for even distribution of clamping forces. This results in a tight fit and greater holding power, without the shaft damage caused by set screws. Clamp collars are easy to remove, indefinitely adjustable, and work well on virtually any shaft. Ruland uses carefully selected materials and proprietary processes on its one-piece collars to ensure the clamping gap remains open for simpler and more precise adjustment, installation and fit.

Two-piece shaft collars offer the same benefits as one-piece shaft collars with additional versatility and convenience. The split design is easily installed and disassembled, reducing labor and downtime when adjustment, removal, or replacement is necessary. The two-piece shaft collar uses the full seating torque of its forged screws to apply a uniform distribution of forces around the shaft's circumference. These clamping forces provide the collar with a holding power superior to one-piece and set screw shaft collars. Ruland keeps both halves of the split collar together throughout the manufacturing process to assure a perfect match for proper fit, alignment, and holding power. This process also makes the two-piece collar more adaptable to shafts which vary a small amount from nominal size


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