DSL series

Product catalog summary

Specifications
The document provides detailed specifications for Acetal Fairloc Hub Spur Gears. These gears are precision graded according to JIS grade N10 (JIS B1702-1: 1998) and JIS grade 6 (JIS B1702: 1976). They feature standard full-depth gear teeth with a pressure angle of 20°. The material used is Acetal with an SUS303 core, and the tooth hardness ranges from 110 to 120 HRR. No heat treatment is applied.

Product Details
The document lists various models of spur gears with different modules (0.5, 0.8, and 1) and numbers of teeth. Each model is detailed with dimensions such as bore, hub diameter, pitch diameter, outside diameter, face width, hub width, total length, and cap screw dimensions. The document also includes tables showing allowable torque, backlash, and weight for each model.

Procedures and Recommendations
1. Allowable torques are calculated based on assumed usage conditions. More details are available on Page 31.
2. Theoretical backlash values are provided for identical gears in mesh.
3. Holding strength between the teeth (acetal) and the core (SUS303) is 2.9 N·m for all DSL products.
4. Fairloc Hub Gears attach to shafts via friction coupling. Recommended shaft tolerances are g6, h6, and h7. Torque slippage should be considered during selection.
5. Do not tighten the clamping screw without a shaft inserted to avoid permanent deformation.

Fastening Torque vs. Slipping Torque
The document cautions that slipping torque, dependent on fastening torque, can be less than gear strength. A chart illustrates the relationship between slipping torque and fastening torque.

Caution on Secondary Operations
Secondary operations should be performed carefully to avoid distorting the groove for clamping.

Additional Information
Drawings can be outputted from the Web Catalog as DXF files. The document also provides a cautionary note on product characteristics and secondary operations.

Catalog excerpts

| Acetal Fairloc Hub Spur Gears 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 Specifications * The gear grade listed is the value before clamping. The precision grade of products with a module of less than 0.8 is equivalent to the value shown in the table. Acetal Fairloc Hub Spur Gears [Caution on Product Characteristics] © The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see Page 31 for more details. © The backlash values shown in the table are the theoretical values for the backlash in the normal direction of a pair of identical gears in mesh. © Holding strength between the teeth (acetal) and the core (SUS303) is 2.9N- m for all DSL products. Please consider holding strength when selecting products. © Fairloc Hub Gears are attached to the shaft by a friction coupling. Recommended shaft tolerances are g6, h6 and h7. Torque slippage should be considered when making a selection. © Do not tighten the clamping screw without inserting a shaft, or the bore will be permanently deformed and will not accept a shaft. [Caution on Secondary Operations] © Perform secondary operations carefully as to not distort the groove for clamping. ■ Fastening torque vs. Slipping torque The slipping torque which is dependent on the fastening torque can sometimes be less than the gear strength. Please use caution in selecting. The chart on the right shows the relationship between the slipping torque and the fastening torque. ■ Fastening torque vs. Slipping torque Other Bevel Worm Screw Bevel Miter CP Racks Dacks Internal Helical Spur Products Gearboxes Gear Pair Gears Gears Gears & Pinions Gears Gears Gears 124 Drawing can be outputted from the Web Catalog as DXF files.

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l-d Acetal Fairloc Hub Spur Gears 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 Specifications * The gear grade listed is the value before clamping. The precision grade of products with a module of less than 0.8 is equivalent to the value shown in the table. Acetal Fairloc Hub Spur Gears [Caution on Product Characteristics] © The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see Page 31 for more details. [Caution on Secondary...

Open the catalog to page 2