Aluminum-Bronze Screw Gears

Specifications

Precision grade JIS quality N9 (JIS B1702-1: 1998) JIS quality 5 (JIS B1702: 1976)

Reference

portion of gear Normal plane

Gear teeth Standard complete depth

Normal

pressure angle 20°

Helix angle 45°

Material CAC702
① When mating screw gears made of the same material they may trigger Aluminum-Bronze Screw Gears abrasion and scoring. It is suggested to mate Screw Gears made up of different materials.

② The allowable torques shown in the table are the calculated values based on the assumed usage conditions.

③ The backlash values proven in the table are the theoretical values for the backlash in the standard direction of a pair ofidentical gears in mesh.

④ For offset shaft applications, match a RH with a RH, or LH with a LH, to produce a set of screw gears. For parallel shaft applications,

mesh opposite hands (RH and LH) of helical gear sets.

⑤ If the bore diameter is usually less than φ 4, then the bore tolerance class is usually H8. If the bore diameter is usually φ 5 or φ 6, and the hole length (total duration) exceeds 3 times the diameter, then the class can be H8.

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Ever-power Schaftkragen Co., Ltd.

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