[KHK] ZST hardened tooth ground helical rack twist 19°31′41″

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last updated：Jul 30, 2025

小原歯車工業

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High-precision rack born in Germany! The craftsmanship of a master who has perfected linear motion components shines through. The twist angle is 19°31′41″, making it a rack with excellent quietness.

This is a hardened tooth ground helical rack manufactured by Schöneberger. The dimensions of the rack are in European specifications, adopting a special twist angle of 19°31′41″, resulting in a movement of 200, 250, 300, 400 mm... in whole millimeters for one rotation of the pinion. Additionally, the pinion gear is designed as a plus displacement gear to enhance strength, while also ensuring that the assembly distance is in whole millimeters, prioritizing user-friendliness for our customers. Due to high-frequency hardening of the tooth surface, additional machining such as mounting holes can be freely added outside of the tooth area. The J series (with mounting holes) is also available. *For more details, please contact us or refer to the catalog.

Related Link - https://www.khkgears.co.jp/khk_products/zst.html

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【Features】 ○ Modules 2 to 6 (CP6.667 to 20) ○ Manufactured by Schneeburger ○ Rack dimensions are European specifications ○ Pinion gears are made with positive displacement gears for increased strength ○ Assembly distances are designed to be whole millimeters ○ Additional machining for mounting holes and other features is possible outside of the tooth area ○ J series is also available 【Common Specifications】 ○ Accuracy grade: DIN 3962, 3963, 3967 Q6 grade ○ Gear standard section: Tooth perpendicular ○ Tooth shape: Straight tooth ○ Pressure angle: 20° ○ Twist angle: 19°31′41″ right twist ○ Material: DIN C45 (equivalent to JIS S45C) ○ Heat treatment: High-frequency hardening of the tooth surface ○ Tooth surface hardness: HRC 55 to 60 ● For more details, please contact us or refer to the catalog.