Precision Trapezoidal Threaded Rods and Nuts - Maryland Metrics

Trapezoidal thread nutsComplete plastic nuts EKM• For use in motion drives requiring low-noise, high speeds and duty cycles, and medium loads• Good emergency running characteristics• Material: NeKu 1 (NEFF ® Works Standard) (Characteristics: see below)D 1L 7L 1L8Bx TType D1 L1 L7 L8 BxT Weight(kg) Bearing Surface (mm2)EKM Tr 12x4 20 24 5 14 3x1.8 0.01 140EKM Tr 16x4 28 34 7 20 5x2.9 0.02 520EKM Tr 20x4 32 34 7 20 5x2.9 0.03 670EKM Tr 20x8 P4 32 34 7 20 5x2.9 0.03 670EKM Tr 20x16 P4 32 34 7 20 5x2.9 0.03 670EKM Tr 24x5 38 34 7 20 5x2.9 0.04 800EKM Tr 32x6 53 60 14 32 6x3.5 0.14 1910EKM Tr 40x7 63 60 14 32 6x3.5 0.18 2400EKM Tr 50x8 72 82 16 50 6x3.5 0.29 4140How to order: Please prefix the PT-USA part number or description with ‘R739-’ example: R739-MLS (+ configuration parameters)Material Characteristics:Material 2.10900.2% yield strength R p 0.2: 120 N/mm 2Tensile strength R m (δB): 240 N/mm 2Min. strain at break: 15%Brinell hardness HB 10/1000: 65Density: 8.8 kg/dm 3Modulus of elasticity: 90000 N/mm 3pv factor: 300 N/mm 2 X m/minMaterial NeKu 1Tensile strength: 80 N/mm 2Modulus of elasticity: 2800-3000 N/mm 2Impact strength: 40 kJm 2Notch impact strength: 4 kJm 2Thermal expansion:8.5 X 10 -5 /ºCWater absorption: 0.25%Water saturation: 0.6%Density: 1.38 kg/dm 3Friction against steel: 0.05-0.08Ball hardness H 358/30: 150 N/mm 2Strain with a yield stress of 80 N/mm 2 : 4-5%pv factor:100 N/mm 2 X m/minMax. pressure per unit area: 10 N/mm 2Max. rubbing speed:120 m/min12copyright 2002, 2013 maryland metrics/precision technology usa, inc.