Description NM112 Coupling (2 x Hub Insert) Alt to Nor-Mex Normex Size 112 Pilot Bore Includes 1 x Complete NM Coupling Size 112 72shA Element (Alternative to Nor-Mex) The NM coupling offers dampening protection, impact mitigation, electrical isolation and misalignment accommodation in multiple directions, with less clearance requirements than tyre couplings. We can bore and key these couplings to your required size, please enquire for more details. Accommodates misalignment in the radial and axial direction Synthetic rubber intermediate ring Reduces shock, vibration and noise between the drive and driven system Protects against drive resonance and shock loads Available for shaft diameters from 7mm up to 95mm 13Nm of torque transmission up to 1600Nm Maximum 12500rpm through to 3000rpm *Main listing image does not represent part number   ModelBoss Diameter D mmOutside Diameter (OD) mmLength (L) mmJoin Spacing (S) mm Torque Normal NmTorque Max NmBore Diameter Min mmBore Diameter Max mmMax Speed rpmApprox Weight (Complete) kg NM503325252.0 - 0.51323719125000.48 NM674667302.5 - 0.52239828100001.02 NM825382403.0 - 1.04988103280001.88 NM976997503.0 - 1.0103186104270003.54 NM11279112603.5 - 1.0164294144860005.4 NM12890128703.5 - 1.0262471185550008.1 NM148107148803.5 - 1.04097362265450013.5 NM168124168883.5 - 1.568212262875400019.3 NM1941401981003.5 - 1.5109819613285350026.3 NM2141582181124.0 - 2.0163829424095300035.7