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Stainless Steel Hubs for PSA IAAAAAAAAAAA Other Bevel Worm Screw Bevel Miter CP Racks R . Internal Helical Spur Products Gearboxes Gear Pair Gears Gears Gears & Pinions ac s Gears Gears Gears [Caution on Product Characteristics] ©The area where PSA Plastic Spur Gears are attached, with hub tolerance h7. © The friction coupling torques shown in the table are reference values calculated according to these set values; friction factors and fastening torques of the tapping screw. ©Please refer to the assembly example below, and then attach the hub to the gear with the accessories, plain washers, spring washers and hexagon socket head cap screws. ©In accordance with the fastening torque values shown in the dimension table, use a torque wrench and fasten hexagon socket head cap screws firmly, to attach the hub. © If a fastened hexagon socket head cap screw comes loose, the friction tightening torque values shown in the table can not be maintained. It is recommended to check the fasteners regularly and retighten when required. © For secure positioning, it is recommended to use dowel pins. ■ Features of Stainless Steel Hubs • This is an attached stainless steel hub with excellent rust resistance. • Perfectly matches with PSA Plastic Spur Gears, and suitable for food processing machinery. • Efficient use of materials and superior cost performance for this product. SUKB25058 Stainless Steel Hubs (This product) Plain washers (Accessories) Recommended fastening torque [Caution on Secondary Operations] © Please read "Cautions on Performing Secondary Operations" in Page 32 when performing modification 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. © Datum plane for machining hubs is the outer circumference of the hub, where PSA Plastic Spur Gears are attached, and the flank of the flange is facing the hub. © For modifying tapped holes at the outer circumference of the hub, apply machining with care and in consideration of the positions of the screw holes for the fastening screws, that attach the hub. (This position is where no interference occurs with the hexagon socket head cap screws). ■ Partner Products and Modifications ■ Tapped holes at the outer circumference of the hub ■ Friction Coupling Torque for Stainless Steel Hubs Friction coupling torque, for Stainless Steel Hubs, is calculated from the frictional force generated by the fastening torque at the contact face of the gear and the stainless steel hub. Fastening Torque F(N) is calculated from the equation below. F _ n • 1000 -t k • d n : Number ^ No. of threaded holes shown in the dimension table. T : Tightening torque (N*m) ^ Fastening torque shown in the dimension table. K : Torque coefficient ^ Set the value at 0.164 d : Nominal diameter (mm) ^ Socket head screw size shown in the dimension table (M5 = 5mm) Friction Coupling Torque Tf (N * m) is calculated from the equation below. t F ' ft • d Tf _ ---w— 2000 F : Fastening torque (N) ^ The value obtained from the calculation above. ^ : Friction factor at the contact face of the gear and the stainless steel hub ^ Set the value at 0.18 Dw : Pitch diameter of the threaded hole (mm) ^ Socket head screw size C shown in the dimension table PSA2.5-40 Plastic Spur Gear (Purchased separately and modified) Spring washers (Accessories) Hexagon socket head cap screws (Accessories) Stainless Steel Hubs Modifications for bores, keyways and tapped holes done in 3 days! Please request modifications at KHK Quick-Mod Gears. To find more information on KHK Quick-Mod Gears, please see Page 6. Modifications for PSA Products (Purchased separately and modified with fee) Other Bevel Worm Screw Bevel Miter CP Racks Dacks Internal Helical Spur Products Gearboxes Gear Pair Gears Gears Gears & Pinions Gears Gears Gears