As an Amazon Associate, we earn from qualifying purchases. Ruland Ruland . PSR20-1/2"-11MM-A Gallery Attributes Brand name, Manufacturer name, Manufacturer, Extra Product NameRuland Attribute000.500 in x 11 mm Attribute016000 RPM Attribute021.250 in (31.8 mm) Attribute031.500 in (38.1 mm) Attribute04Beam Coupling,4 Beam,1/2"x11mm,Aluminum Attribute053 deg Attribute06Aluminum Attribute070.015 in (0.38 mm) Attribute08-40?F to 225?F (-40?C to 107?C) Attribute090.120 Deg/lb-in (1.06 Deg/Nm) Attribute10Set Screw Attribute110.0340 lb-in<sup>2</sup>, 9.948 x10<sup>-6</sup> kg-m<sup>2</sup> Attribute1217.6 mm Attribute134 ea Attribute14Black Oxide Attribute15Metric Attribute16+0.0000 in / -0.0005 in (+0.000 mm / -0.013 mm) Attribute1752 lb-in (5.88 Nm) Attribute180.695 in Attribute190.010 in (0.25 mm) Attribute20Alloy Steel Attribute217.2 Nm Attribute2226 lb-in (2.94 Nm) Attribute2313 lb-in (1.47 Nm) Attribute24M6 Attribute25+0.001 in / -0.000 in (+0.025 mm / -0.000 mm) Attribute26Inch/Metric Attribute27United States AttributeKey00Bore Dia. AttributeKey01Max. RPM AttributeKey02Outside Dia. AttributeKey03Overall Length AttributeKey04Item AttributeKey05Max. Angular Misalignment AttributeKey06Material AttributeKey07Max. Parallel Misalignment (In.) AttributeKey08Max. Temp. Range (F) AttributeKey09Torsional Stiffness (Deg./In.-Lbs.) AttributeKey10Style AttributeKey11Moment of Inertia AttributeKey12B2 Shaft Penetration AttributeKey13Number of Screws AttributeKey14Screw Finish AttributeKey15Fastening Dimensions AttributeKey16Recommended Shaft Tolerance AttributeKey17Static Torque AttributeKey18B1 Shaft Penetration AttributeKey19Axial Motion AttributeKey20Screw Material AttributeKey21Screw Seating Torque AttributeKey22Dynamic Torque Non-Reversing AttributeKey23Dynamic Torque Reversing AttributeKey24Set Screw Size AttributeKey25Bore Tolerance AttributeKey26Measurement Type AttributeKey27Country of Origin (subject to change) DimensionUnitinch GraingerSku, MPNPSR20-1/2"-11MM-A UPC634529198841 UnitOfMeasureEA Weight0.36 WeightUnitlbs cali_prop65_messageWARNING: This product can expose you to chemicals including Ethylene thiourea, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. cali_prop65_orglabel, cali_prop65_whtlabelTrue cali_prop65_warnmsgscenario, length7 countryOfOriginUS extendedLead10 extendedQty-2 height, moq, multiple, tierMinQty11 jsonUrlData924526ffbdad25e5923b qtyInStock0 qtyInStockOverrideDrop Ship SKUG7095711 tierPrice156.37 urlhttps://www.zoro.com/ruland-motion-control-coupling-4-beam-12x11mm-aluminum-od-1250-l-1500-psr20-12-11mm-a/i/G7095711/ width4 Distributor offers SellerSKUMOQIn stockMultiplePrices ZoroG7095711111 @ $56.37 Digi-Key1360109411011 @ $97.45