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. Ruland manufactures one-piece clamp shaft collars in 1215 lead-free steel with a zinc or proprietary black oxide finish, 303 and 316 stainless steel, high-strength 2024 aluminum, and engineered plastic. Bore sizes range from 1/8" to 6" and 3mm to 150mm.
Two-piece shaft collars offer the same benefits as the one-piece style 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. Ruland manufactures two-piece clamp shaft collars in 1215 lead-free steel with a zinc or proprietary black oxide finish, 303 and 316 stainless steel, high-strength 2024 aluminum with or without an anodize finish, titanium, and engineered plastic. Bore sizes range from 1/8" to 6" and 3mm to 150mm.
Double wide shaft collars are manufactured in one- and two-piece clamp type. They have 25% more holding power than equivalent size and type standard collars. Double wides can be used as a short rigid coupling in space restricted applications that will not fit a standard sized rigid coupling. Ruland manufactures double wide shaft collars in 1215 lead-free steel with a proprietary black oxide finish, 303 stainless steel, and high-strength 2024 aluminum. Bore sizes range from 1/8" to 2" and 6mm to 25mm.
Heavy duty shaft collars have a larger outer diameter, width, and screw for use in applications where the highest holding is required. They are manufactured in one- and two-piece clamp style from 1215 lead-free steel with a proprietary black oxide finish and 303 stainless steel. Bore sizes range from 3" to 6" and 75mm to 150mm.
Quick-clamping shaft collars are ideal for light duty or low-rpm applications that require frequent setup changes or adjustments. The handle sits flush with the outside diameter allowing the shaft collar to be precisely adjusted by hand without the need for tools. The quick-clamp shaft collar is made from aluminum and has a black anodized finish with stainless steel hardware. They do not mar the shaft and are indefinitely adjustable. Bore sizes range from 1/4" to 3" and 6mm to 75mm.
Set screw shaft collars are the most effective when used on a shaft made of a material which is softer than the set screw. Ruland set collars are furnished exclusively with forged socket set screws for greater torque capacity and improved holding power. Forging of the stainless steel set screws has the additional benefit of work hardening, which results in stainless steel with elevated hardness and performance. Set screw shaft collars are made from 1215 lead free steel with a proprietary black oxide finish, 303 stainless steel, high-strength 2024 aluminum, and engineered plastic. Bore sizes range from 3/16" to 4" and 4mm to 50mm.
Thin line shaft collars are designed for applications with space and weight restrictions in industries such as packaging, printing, medical, and food, and are particularly suitable for split hub componentry such as encoders. They function as clamps, positioners, guides, spacers, and stops in a smaller profile than traditional shaft collars. Two-piece styles have a balanced design for higher RPM applications. Most bore sizes are available with different outer diameter and width dimensions and screw sizes allowing the user to match space limitations and holding power with their application requirements. Ruland manufactures double thin line shaft collars in lightweight 2024 aluminum and 303 stainless steel. Bore sizes range from 3/16" to 1-1/2" and 5mm to 40mm.
Threaded shaft collars share the same performance and benefits of their round bore counterparts, while providing additional features. Threaded collars have higher axial holding power than round bore collars, while offering easier installation and adjustment than solid ring locking devices. A diverse list of acme, right hand, and left hand thread sizes and pitches are offered. Ruland double taps each threaded collar to ensure precise and burr-free threads to allow for easy installation and removal, proper fit, and extended shaft life. Threaded shaft collars are manufactured in 1215 lead-free steel with a black oxide finish and 303 stainless steel. Bore sizes range from 1/8" to 2-1/4" and 4mm to 30mm.
Ruland bearing locknuts are designed to fit AFBMA standard shafting that are commonly found in high precision spindle applications. They have the same performance and benefits of their round bore counterparts, while providing additional features. Ruland bearing locknuts are a one-piece clamp type design allowing for a more secure connection on the shaft. They have higher axial holding power than round bore collars, while offering easier installation and adjustment than solid ring locking devices. Ruland double taps each bearing locknut to ensure precise and burr-free threads to allow for easy installation and removal, proper fit, and extended shaft life. Bearing locknuts are manufactured in 1215 lead-free steel with a black oxide finish. They are available in industry standard locknut sizes from N00-N14.
Hygienic clamping assemblies are ideal for high pressure washdown applications found in the food processing, packaging, agriculture, and medical industries. The patent pending design contains a 303 stainless steel shaft collar, enclosed with a male and female shroud made from FDA compliant materials, and three O-rings with NSF compliant lubrication. Watertight seals on the shroud help to prevent particulate buildup which can lead to bacteria growth.
Ruland manufactures standard shaft collars with hex and d-bore profiles for proper mating with the appropriate shaft. Hex bore collars allow for added holding power and higher torque capabilities if being used in positive drive applications. D-bore collars are designed for use with d-shafting. They are a better option than set screw shaft collars as they do not mar the shaft, have higher holding power, and are indefinitely adjustable. Ruland manufactures hex and d-bore shaft collars in 1215 lead-free steel with a proprietary black oxide finish and 303 stainless steel. Hex collars are also available in high-strength 2024 aluminum for lightweight applications. D-bore shaft collars available in bore sizes from 1/4" to 1" and hex bore collars from 3/8" to 1/2".
Mountable shaft collars are designed with flats and holes in the outer diameter or holes only to allow for easy mounting of shaft collars to each other or adjacent assemblies. They are commonly found in applications such as cylinders where the collar can be mounted to a base plate. Flats allow for an easy surface to weld the collar. These mountable shaft collars are available in one- and two-piece styles with all the standard benefits of a clamp style design - do not mar the shaft, are indefinitely adjustable, and have higher holding power than set screw types. Both styles come standard with tapped holes. Ruland manufactures mountable shaft collars in 1215 lead-free steel with a black oxide finish, 303 stainless steel, and high-strength 2024 aluminum.
- Proprietary process developed over 80 years to ensure superior fit, finish and holding power.
- Tightly controlled face to bore perpendicularity for proper alignment of mating components.
- Proprietary processes to maintain round bore geometry for tight tolerances, proper installation fit, and improved clamping forces.
- Bore size and Ruland name stamped on every shaft collar for ease of identification.
- Proprietary black oxide process produces a fine glossy finish while increasing holding power and resisting corrosion.
- Both halves of the two-piece collar are mated together throughout the manufacturing process for proper fit and alignment.
- Highest grade forged screws (DIN 912 12.9 for metric screws) test to or beyond industry standards for maximum torque ability.
- Aluminum shaft collars use 2024 aluminum as opposed to 6061 aluminum for increased screw seating torque.
- 1215 lead-free steel is standard on all steel shaft collars for weldability, environmental friendliness, and industry compliance.
- 316 stainless hardware is standard on all 316 stainless shaft collars.
- All Ruland shaft collars are RoHS3 and REACH compliant.
Examples of Custom Work
- Custom bore sizes, tolerances, and/or geometry.
- Fail safe designs.
- Special hub lengths.
- Set screw hub connections.
- Stainless steel hubs.
- Special hardware requests.
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