Does your helical gear selection call for hardened teeth? KHK SH-H is the hardened option in the SH family, with its own catalog model codes.
Customer: What makes this series useful?
KAYO: The official Japanese catalog lists SH-H separately as hardened helical gears. Use the exact model ending in H when requesting the hardened version.
Customer: Which sizes can I choose?
KAYO: The current Japanese selection table lists 20 standard model codes, with module values 2, 3 and tooth counts from 15 to 60. Here are examples from that table.
| Model | Module | Teeth | Outside diameter (mm) | Mass (kg) |
|---|---|---|---|---|
| SH2-15RH | 2 | 15 | 35.06 | 0.15 |
| SH2-30LH | 2 | 30 | 66.12 | 0.72 |
| SH3-15RH | 3 | 15 | 52.59 | 0.52 |
| SH3-30LH | 3 | 30 | 99.17 | 2.20 |
| SH3-60LH | 3 | 60 | 192.35 | 9.18 |
Customer: How do I select the right model?
KAYO: Confirm the complete H-suffix model, mating gear geometry, helix hand and shaft fit. Compare the published load ratings for the actual model and operating conditions. Helical teeth create axial thrust, so include suitable bearing support and lubrication in the design.
Customer: What are the listed model numbers?
KAYO: The standard models shown in the official selection table are:
SH2-15RH, SH2-15LH, SH2-20RH, SH2-20LH, SH2-30RH, SH2-30LH, SH2-40RH, SH2-40LH, SH2-60RH, SH2-60LH, SH3-15RH, SH3-15LH, SH3-20RH, SH3-20LH, SH3-30RH, SH3-30LH, SH3-40RH, SH3-40LH, SH3-60RH, SH3-60LH
Customer: What should I send with an enquiry?
KAYO: Please share the complete model number, quantity, mating gear or rack details, bore and keyway requirements, operating speed and load. We can then discuss the specification and availability for your application.
Reference: KHK SH-H official model selection table | KHK helical gear range. Dimensions and model availability should be confirmed against the latest manufacturer drawing.