Screw gears, also sometimes called crossed helical gears, are helical gears used in motion transmission between non-intersecting shafts. The helical gears used in parallel beams have the same helix angle but opposite directions. For shaft angles other than the parallel, an arbitrary helix angle can be chosen. Assuming no profile shift, the intersecting angle of the shafts is the sum of the respective helix angles. Helical gears have point contacts and have lower efficiency than parallel or perpendicular shaft gears, and cannot transmit heavy loads.
Screw Gears: Technical Information
MINGHUA stock screw gears come in modules 1 ~ 4, 10 to 30 teeth, and four materials: S45C, SUS303, CAC702 (formerly A BC2), and MC nylon.
JIS B 1702-1: 1998
|SN||1 ~ 4||S45C||—||Cut||N9||Possible||Popular screw gears. Additionally, gear tooth induction hardening secondary operations can be performed.|
|SUN||1 ~ 3||SUS303||—||Cut||N9||Possible||Suitable for food machinery due to SUS303’s rust-resistant qualities.|
|AN||1 ~ 4||CAC702
|—||Cut||N9||Possible||made of aluminum bronze, these gears have excellent wear resistance.|
|PN||1.5 ~ 3||MC901||—||Cut||N9||Possible||Light-weight products are made of MC Nylon and can be used without lubrication.|
|Direction of Shaft||Arrangement of Helix Hands|
|Skewed Shafts||RH-RH or LH-LH|
1. According to the customer requirements of the strength and performance of the product, we will choose different compressive forces of steel.