KHK Stock Gears 3013

186Internal Ring GearsModule 2、2.5、3Steel Ring GearsSIRCatalog No.ModuleNo. ofteethShapeInternal dia.Pitch dia.Outside dia.Face widthAllowable torque (N·m)Allowable torque (kgf·m)Backlash(mm)Weight(kg)ACDEBending strengthSurface durabilityBending strengthSurface durabilitySIR2-120SIR2-200m2120200T1T1236396240400286446202041367768.811042.169.07.0211.20.17~0.370.20~0.412.984.80SIR2.5-120SIR2.5-200m2.5120200T1T12954953005003555552525807132013822082.313514.022.50.19~0.410.22~0.465.558.94SIR3-120SIR3-160m3120160T1T135447436048042454430301390184024431514218824.932.10.22~0.450.22~0.459.2812.1EACDT1[Caution on Product Characteristics]① The backlash values shown in the table are the theoretical values for the normal direction for the internal ring in mesh with a 30 tooth SS spur gear.② The allowable torque shown in the table are the calculated values according to the assumed usage conditions. Please see Page 182 for more details③ Please check for the involute interference, trochoid interference and trimming interference prior to using internal gears.[Caution on Secondary Operations]① Please read “Caution on Performing Secondary Operations” (Page 32) when performing modifications and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.② Avoid performing secondary operations that narrow the tooth width as it affects precision and strength.SpecificationsPrecision gradeJIS grade N9 (JIS B1702-1: 1998)JIS grade 5 (JIS B1702: 1976) Gear teethStandard full depthPressure angle20°MaterialS45CHeat treatment ―Tooth hardnessless than 194HBSpurGearsHelicalGearsInternalGearsRacksCP Racks& PinionsMiterGearsBevelGearsScrewGearsWormGear PairBevelGearboxesOtherProducts*For products not categorized in our KHK Stock Gear series, custom gear production services with short lead times is available. For details see page 8.