Ruland Manufacturing – Shaft Couplings and Shaft Collars
ISC Companies and Adams-ISC can supply the Ruland products listed on this page and others found on ruland.com. For more information or for a product quote, please contact us by phone 763-559-0033, by email email@example.com, or by filling out our online contact form.
Since 1937, Ruland Manufacturing Co., Inc. has been manufacturing shaft collars and couplings to the highest standards for performance and appearance in the industry. Ruland’s broad product selection includes shaft collars, rigid couplings, bellow couplings, zero-backlash jaw couplings, beam couplings, Oldham couplings, and disc couplings. Their motion control and power transmission products are utilized in a variety of markets including precision instrumentation, medical equipment, food processing, printing, semiconductor, alternative energy, and many others.
Ruland manufactures shaft collars in multiple styles to fit shafts ranging from 1/8 in. to 6 in. and 3mm to 150mm. They are made from select North American bar stock in 303 and 316 stainless steel, black oxide and zinc plated carbon steel, high-strength aluminum, and engineered plastic. Ruland shaft collars have precisely controlled face to bore perpendicularity (identified by the grooved face) TIR ≤ .002 in. (.05mm) with tighter tolerances on bearing locknuts. Perpendicularity is critical for alignment when a shaft collar is used as a load-bearing face, mechanical stop, or for mounting components.
One-Piece Shaft Collars
Threaded Shaft Collars
Heavy Duty Shaft Collars
Quick Clamping w/Lever
Two-Piece Shaft Collars
Thin Line Shaft Collars
Hex and D-Bore
Keyed Shaft Collars
Quick Clamping w/CamDouble Wide Shaft CollarsSet Screw Shaft Collars
Mountable Shaft Collars
Rigid shaft couplings are available with or without keyways in one- and two-piece and set screw designs. Ruland manufactures them from select North American bar stock in 2024 aluminum for lightweight and low inertia, 1215 lead-free steel for general purpose use, and 303 stainless steel for high corrosion resistance. Straight and step bore type rigid couplings are standard products for shafts ranging from 1/8 in. to 2 in. and 3mm to 50mm.
Short/Double Wide Couplings
Set Screw Couplings
Ruland servo couplings are available in a variety of styles, sizes, and materials to match different application requirements. Choosing the correct servo coupling involves many performance factors including: shaft misalignment, RPM, space requirements, torque, etc. Matching a shaft coupling with these factors is critical to system performance.
Ruland offers three series of zero-backlash beam couplings in inch or metric dimensions with bores ranging from 3/32 in. (3mm) to 3/4 in. (20mm). Flexible beam couplings are machined from a single piece of material and feature multiple helical cuts. This design provides higher torque capabilities and reduced wind-up when compared to commodity type single beam couplings. They can accommodate all forms of misalignment and have a balanced design for reduced vibration at high RPM.
F-Series Six Beam Couplings
P-Series Four Beam Couplings
MW-Series Full Metric Dimensions
Ruland bellows couplings are comprised of two anodized aluminum hubs and a stainless steel bellows. This design creates a low inertia zero-backlash coupling with long life properties. The thin wall of the bellows allows the coupling to remain flexible under misalignment conditions while maintaining rigidity under torsional loads. Bellows couplings can accommodate all forms of misalignment and have a balanced design for reduced vibration at high speeds up to 10,000 RPM. They are best suited for applications with limited misalignment where high torque and precise positioning are required.
Inch Dimensions Bellows
Metric Dimension Bellows
Inch to Metric Bellows
Ruland manufactures disc couplings in single and double disc styles with bores in inch, metric, and inch to metric combinations ranging from 1/8 in. to 1-1/4 in. and 3mm to 32mm. They utilize thin stainless steel disc springs that allow for a substantial amount of shaft misalignment while remaining rigid under torsional loads. Hubs are manufactured from lightweight 2024 anodized aluminum for low inertia.
Double Disc Couplings
Electrically Isolated Couplings
Single Disc Couplings
Ruland zero-backlash jaw couplings and are a three-piece assembly with a balanced design comprised of two hubs and an elastomeric insert called a spider. Users can combine clamp and set screw hubs with inch, metric, keyed, and keyless bores in sizes ranging from 1/8 in. to 1-1/4 in. and 3mm to 32mm. The polyurethane spider dampens impulse loads, minimizing shock to the motor and other sensitive components.
Jaw Coupling Hubs
Jaw Coupling Spiders
Jaw Coupling Bundle
Ruland Oldham couplings are a three-piece assembly with a balanced design comprised of two hubs and a center disk. This allows for a highly customizable coupling that allows the user to combine clamp and set screw hubs with inch, metric, keyed, and keyless bores in sizes ranging from 1/8 in. to 1-1/8 in. and 3mm to 30mm. Oldham couplings can accommodate small amounts of angular and axial misalignment and they are especially useful in parallel misalignment accommodating up to 10% of their OD in misalignment.
Oldham Coupling Hubs
Oldham Coupling Disks
Oldham Coupling Bundle
Ruland Controlflex couplings are a three-piece assembly with two hubs joined to one or two center inserts called frogs. Clamp style hubs are manufactured with inch, metric, keyed, and keyless bores ranging from 1/8 in. to 1-1/2 in. and 3mm to 40mm. The unique design of the frog concentrates forces onto its flexible limbs allowing for low bearing loads and protecting small bearings. They are electrically isolating since the hubs do not touch and frogs are made from acetal. They are manufactured by Schmidt-Kupplung and RoHS3 compliant.
Controlflex Single Insert Hubs
Controlflex Double Insert Hubs
Ruland slit couplings are high performance with high misalignment accommodation. They are manufactured by Reliance Precision from a single piece of 7075 aluminum for low inertia and have a balanced design for reduced vibration at speeds up to 70,000 RPM. The patented slit design has radiused edges that reduce stress on the coupling allowing for high misalignment and torsional stiffness with low bearing loads.
Slit Couplings Long RL
Slit Couplings Short RS
Universal Joints (U-Joints)
Ruland universal joints are available in single and double configurations with friction or needle bearings. Single U-joints have two yokes and a trunnion assembly to allow for use in confined spaces and angular misalignment up to 45 degrees. Double U-joints have two yokes, two trunnion assemblies, and a center yoke to allow for larger gaps between shafts, parallel misalignment, and angular misalignment up to 90 degrees.
U-joints are manufactured from high-grade alloy steel for high strength and stainless steel for corrosion resistance and available with or without keyways in bore sizes from 3/16 in. to 2 in., 5mm to 35mm, or machinable bores. Universal joints from Ruland are manufactured by Belden Universal.
Friction Bearings U-Joints
Needle Bearings U-Joints
Hand Tools / Installation Tools
Drill Stop Kits
Hex Key Sets
Other Product Categories
CNC Tool Shelves
Vibration Isolation Mounts
Modular Mounting Systems