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DIFFERENT RIGID COUPLINGOuter SizeOptional Inner HoleD20 L253/4/5/6/6.35/7/8/9/10 mmD20L353/4/5/6/6.35/7/8/9/10 mmD25L254/5/6/6.35/7/8/9/9.5/10/11/12/12.7 mmD25 L304/5/6/6.35/7/8/9/9.5/10/11/12/12.7 mmD25 L355/6/6.35/7/8/9/9.5/10/11/12 mmD32 L408/9/9.5/10/11/12/12.7/13/14/15/16 mmD32 L458/9/9.5/10/11/12/12.7/13/14/15/16 mmD40 L4510/11/12/12.7/13/14/15/16/17/18/19/20/21/22 mmD40 L5010/11/12/12.7/13/14/15/16/17/18/19/20/21/22 mmD45 L6010/11/12/12.7/13/14/15/16/17/18/19/20/21/22/23/24/25 mmD50L5512/12.7/13/14/15/16/17/18/19/20/21/22/23/24/25/26 mmD55 L7512/12.7/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28 mmD65 L8015/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/3132/33/34/35 mm1PCS D25 L40 Rigid Coupling 1. High-precision 2. Low noise 3. Wear-resisting4. Long Service LifeProduct aspects Aviation aluminum alloy; Grade 12.9 high power screw; Light weight, ultra-low inertia and excessive sensitivity; Super oil and corrosion resistance; Outer SizeD(mm)L(mm)t(mm)L/2(mm)M(mm)RatedTorque(N*m)MaxTorque(N*m)MaxSpeed(r/min)Momentof Inertia(kg*m²)LockingTorque(N*m)D20 L2520251122-M31020310003.4x10^-73D20 L3520351174-M31020310003.4x10^-73D25 L302530114.52-M41224250009.2x10^-77D25 L3525351174-M31224250003.4x10^-63D32 L403240119.54-M41530190001x10^-510D32 L4532451224-M41530190001x10^-510D40 L4540451224-M51938150001.5x10^-510D40 L504050124.54-M51938150002.4x10^-510D45 L6045602294-M63060135004.5x10^-515D50 L555055226.54-M64590120007x10^-515D55 L755575236.54-M670140100008x10^-515D65 L8065802394-M811523080009.8x10^-530Sliding Table