Specification Brand : Ruland BulletPoint : Category: Power Transmission -- Shaft Couplings, Collars, and Universal Joints BulletPoint1 : Ruland jaw couplings have a zero-backlash balanced design for reduced vibration at speeds up to 8,000 RPM. Keyway is used on this coupling for additional torque transmission capabilities and to prevent slippage on the shaft. BulletPoint2 : Users can combine clamp or set screw hub with inch, metric, keyed, or keyless bore for a high level of customization. BulletPoint3 : Made from high strength 2024 aluminum for light weight and low inertia. BulletPoint4 : Spiders available in three durometers allowing the user to match coupling performance to application requirements. Fail safe design with hubs interlocking if the spider fails. BulletPoint5 : Hardware exceeds DIN 912 12.9 standards for maximum torque capabilities. Ruland jaw couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant Color : Bronze ExternallyAssignedProductIdentifier : 5693671146747 ExternallyAssignedProductIdentifier1 : 634529116258 ExternallyAssignedProductIdentifier2 : 0634529116258 IncludedComponents : Product & Instructions Guide ItemDisplayWeight : 0.1 pounds ItemName : Ruland MJCC41-12-A Jaw Coupling Hub with Keyway, Clamp Style, Polished Aluminum, 12mm Bore, 41.3mm OD, 53mm Length, 4mm Keyway ItemPackageDimensions_Height : 5.08 centimeters ItemPackageDimensions_Length : 7.62 centimeters ItemPackageDimensions_Width : 7.62 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : multi-flex-couplings Manufacturer : Ruland Material : Aluminum ModelNumber : MJCC41-12-A NationalStockNumber : 3010-01-176-2967 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : MJCC41-12-A ProductDescription : Sleeve Coupling Flange, Size - Sleeve Couplings 9, Flange Type - Sleeve Couplings S, Bore Type - Couplings Fixed Bore, Bore Dia. 7/8 In., Outside Dia. 6.350 In., Length through Bore (In.) 2.41, Max. RPM 3750, Width (In.) 2.41, Height (In.) 6.350, Hub Dia. (In.) 6.350, Material of Construction Cast Iron, Setscrew Location One over the Key and One at 90 Degrees, Max. Angular Misalignment 1 Degrees For EPDM & Neoprene Sleeves, 0.25 Degrees For Hytrel Sleeves ProductSiteLaunchDate : 2012-12-14T22:43:05.571Z Size : 5/8" Shaft Diameter SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31163000