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Material Specifications for NSK Ball Screws
| Application |
Heat
Treating Process |
JIS
Material Code |
U.S.
Material Code |
Surface Hardness |
| Carbon Steel Ball Screws |
- All B/S Nuts
|
Carburizing |
SCM 415H/SCM 420H
|
SAE 4115/4120
|
RC 58-62
|
| Custom B/S Shafts |
- Induction/
- Carburizing
|
- SCM 415H/SCM 420H
- SAE 4150
|
SAE 4115/4120
|
RC 58-62
|
| Std. Series B/S Shafts |
Induction |
SAE 4150
|
- SAE 4150
|
RC 58-62
|
| F/R Produced Shafts |
Induction |
SAE 4150 |
SAE 4150 |
RC 58-62 |
| Rolling Elements (Balls) |
Thru Hardened |
SUJ2 |
52100
|
RC 60-64
|
| Stainless Ball Screws Custom & Std. Series (K/A) |
| Stainless B/S Nuts |
Furnace/ Quench |
SUS 440C |
SAE 440C |
RC 55-60 |
| Stainless B/S Shafts |
Induction |
SUS 440C |
SAE 440C |
RC 55-60 |
| Rolling Elements for Stainless Screws |
Thru Hardened |
SUS 440C |
SAE 440C |
RC 58-62 |
Abbreviations
- JIS Japanese Industrial
- Standards
- SAE - Society of Automotive Engineers
Material Descriptions
- SCM415H, 420H (SAE4115): Low carbon chrome molybdenum steel used for carburizing heat treat process.
- SUJ2 (52100): Bearing steel features high hardness, toughness and resilience.
- SUS440C (SAE440C): Martensitic stainless (hardenable). Has the high hardness that anti-friction bearing applications require, but less corrosion resistance than austenitic stainless steels (300 Series).
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