Specification Brand : Ruland BulletPoint1 : Ruland oldham couplings have a zero-backlash balanced design for reduced vibration at speeds up to 4,500 RPM. They can accommodate high amounts of parallel misalignment (up to 10% of the hub OD). BulletPoint2 : Acts as a mechanical fuse stopping power transmission during a torque overload. User can combine clamp or set screw hub with inch, metric, keyed, or keyless bore for a high level of customization. BulletPoint3 : Made from acetal for higher torque and torsional stiffness capabilities than nylon. BulletPoint4 : Proprietary hub machining process for smooth interaction between the hub and disk allowing for significantly longer life. BulletPoint5 : Ruland oldham coupling disks are RoHS3 and REACH compliant Color : Black ExternallyAssignedProductIdentifier1 : 634529059975 ExternallyAssignedProductIdentifier2 : 0634529059975 ExternallyAssignedProductIdentifier3 : 00634529059975 IncludedComponents : Disc pack kit ItemName : Ruland OD21/33-AT Oldham Coupling Disk, Black Acetal, Bore, 1-5/16" or 33.3mm OD ItemPackageDimensions_Height : 0.762 centimeters ItemPackageDimensions_Length : 7.62 centimeters ItemPackageDimensions_Width : 5.08 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : disc-couplings Manufacturer : Ruland Material : acetal MaximumAngularMisalignment : 1 degrees MaximumRotationalSpeed : 123900 rpm ModelNumber : OD21/33-AT NumberOfItems : 1 PartNumber : OD21/33-AT ProductSiteLaunchDate : 2014-09-06T09:08:39.142Z Size : OD32/51 StreetDate : 2017-03-12T00:00:01Z Style : Modern SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31163000