Oldham Coupling
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” to 1-1/8” and 3mm to 30mm. The center disk is available in three materials to allow designers to fit the coupling to their application requirements. While oldham couplings can accommodate small amounts of angular and axial misalignment, they are especially useful in parallel misalignment accommodating up to 10% of their OD in misalignment. All Ruland oldham couplings are carefully made from select North American bar stock in our Marlborough, MA USA factory under strict controls using proprietary processes and RoHS3 and REACH compliant.
About
This section will allow you to select hubs to be used individually or as part of an assembly. Ruland manufactures oldham couplings in aluminum with an anodized finish for improved lubricity and stainless steel for corrosive applications. Hubs are manufactured with a proprietary machining process that creates a smooth interaction between the hub tenons and disk allowing for the longest service life in the industry. Torque transmission is achieved by mating the slots on the center disk to the drive tenons on each hub. Oldham couplings can help protect expensive machine components by acting as a torque limiter during overload. The disc breaks cleanly and does not allow for any power transmission. Oldham couplings are also electrically isolating since disks are non-conductive
This section will allow you to select disks to be used individually or as part of an assembly. Ruland offers users the ability to tailor the performance of oldham couplings to match their application needs as disks are available in three materials, acetal for high torsional stiffness and zero-backlash, nylon for shock absorption and noise reduction, and PEEK for high temperature and low outgassing. The slots of the disk mate onto the tenons of the hub with a slight press fit to allow the coupling to operate with zero backlash. In the event of disk wear or failure, the disk can be easily replaced and the oldham coupling's original performance restored. Disks with a center hole are available upon request to allow full shaft penetration.
Why Ruland?
- Longest lifespan in the industry because of a proprietary hub machining process that leaves a smoother surface interaction between the hub tenons and disks.
- Speeds up to 4,500 RPM with reduced vibration due to the coupling’s balanced design.
- Oldham couplings are thoughtfully designed and carefully made from meticulously selected North American bar stock in our Marlborough, MA, USA advanced manufacturing facility.
- Over 25,000 customizable configurations with standard off the shelf parts where you can choose:
- Aluminum or stainless steel hubs in clamp or set screw style.
- Inch or metric bores, with or without keyways.
- Disks in acetal, Nylon or PEEK to tailor coupling performance to application needs.
CUSTOM DESIGNS
- Stainless steel oldham couplings
- Two-piece oldham coupling hubs
- Center disks with special bores
- Special bore sizes and geometry
- Special lengths, widths, and outside diameters
- Different materials, finishes, or colors
- Custom hardware requests
- And Many Others... Please Contact Us for More Information
Products
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$89.28 - $212.27Ruland OCT36-20-A OD36/57-AT, 1.250" x 1.250" Oldham Coupling Bundle, Aluminum, Clamp Style Hubs, 2.250" OD, 3.100" Length
Part number | Bore (B1) | Small Bore (B2) | Length (L) | Material | Outer Diameter (OD) | Maximum Speed |
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OCT36-20-A OD36/57-AT | 1.2500 in | 1.2500 in | 3.100 in | Aluminum | 2.250 in (57.2 mm) |