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Ruland Manufacturing – Shaft Couplings and Shaft Collars

Ruland Brand LogoISC 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 protected], 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.

Shaft Collars

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 CollarOne-Piece Shaft Collars

Threaded Shaft CollarThreaded Shaft Collars

Heavy Duty Shaft CollarHeavy Duty Shaft Collars

Ruland International SeriesInternational Series

Ruland Quick Clamping with Lever Quick Clamping w/Lever

Two Piece Split CollarTwo-Piece Shaft Collars

Bearing Lock NutBearing Locknuts

Thin Line Shaft CollarThin Line Shaft Collars

hex and d-boreHex and D-Bore

Ruland Keyed Collars Keyed Shaft Collars

Quick-Clamp Shaft CollarQuick Clamping w/CamDouble Wide Shaft CollarDouble Wide Shaft CollarsSet Screw Shaft CollarSet Screw Shaft Collars

Mountable Shaft CollarMountable Shaft Collars

Rigid Couplings

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.

One-Piece Rigid Shaft CouplingOne-Piece Couplings

Ruland Short Rigid CouplingsShort/Double Wide Couplings

Two-Piece Rigid Shaft CouplingTwo-Piece Couplings

Set Screw Rigid Shaft CouplingSet Screw Couplings

Servo 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.

Beam Couplings

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 CouplingF-Series Six Beam Couplings

P-Series Four Beam CouplingP-Series Four Beam Couplings

MW-Series Full Metric DimensionsMW-Series Full Metric Dimensions

Bellows Couplings

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 DimensionsInch Dimensions Bellows

Metric DimensionsMetric Dimension Bellows

Inch to Metric Bellows CouplingInch to Metric Bellows

Disc Couplings

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 CouplingDouble Disc Couplings

Electrically Isolated Disc CouplingElectrically Isolated Couplings

Single Disc CouplingSingle Disc Couplings

Jaw 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 HubsJaw Coupling Hubs

SpidersJaw Coupling Spiders

Jaw BundleJaw Coupling Bundle

Oldham Couplings

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.

 Hubs Oldham Coupling Hubs

DisksOldham Coupling Disks

Oldham BundleOldham Coupling Bundle

Controlflex Couplings

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.

Ruland Controlflex Single Insert HubsControlflex Single Insert Hubs

Ruland Controlflex BundleControlflex Bundle

Ruland Controlflex Double Insert Hubs2Controlflex Double Insert Hubs

Ruland Controlflex InsertsControlflex Inserts

Slit Couplings

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.

Ruland Slit Couplings LongSlit Couplings Long RL

Ruland Slit Couplings ShortSlit 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.

Ruland Friction Bearings U JointsFriction Bearings U-Joints

Ruland Needle Bearings U JointsNeedle Bearings U-Joints

Ruland Boot Covers U JointsBoot Covers

Hand Tools / Installation Tools

Ruland Drill Stop KitsDrill Stop Kits

Ruland Laminated Shims Laminated Shims

Ruland Torque ScrewdriversTorque Screwdrivers

Ruland Hex Key SetsHex Key Sets

Ruland Spanner WrenchesSpanner Wrenches

Ruland Hex Sockets BitsHex Sockets/Bits

Ruland Torque WrenchesTorque Wrenches

Other Product Categories

Ruland Adjustable HandlesAdjustable Handles

Ruland Rubber BumpersRubber Bumpers

Ruland CNC Tool ShelvesCNC Tool Shelves

Ruland Star KnobsStar Knobs

Ruland Vibration Isolation MountsVibration Isolation Mounts

Ruland KeystockKeystock

Ruland Indexing PlungersIndexing Plungers

Ruland Modular Mounting SystemsModular Mounting Systems

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