| Items |
 MM12BS32 SUH Fafnir® Single Row Ball Screw Support Bearings (MM-BS) |
MM12BS32 DUH Fafnir® Single Row Ball Screw Support Bearings (MM-BS) |
MM12BS32 TUH Fafnir® Single Row Ball Screw Support Bearings (MM-BS) |
MM12BS32 QUH Fafnir® Single Row Ball Screw Support Bearings (MM-BS) |
MM12BS32 SUM Fafnir® Single Row Ball Screw Support Bearings (MM-BS) |
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| Rows per Set | Single | Duplex | Triplex | Quadruplex | Single | |||||
| Design Units | Metric | |||||||||
| d - Bore | 12 mm | |||||||||
| D - Outer Diameter | 1.2598 in32 mm | |||||||||
| Bearing Width | 0.3937 in10 mm | |||||||||
| Total Width | 0.3937 in10 mm | 0.7874 in20 mm | 1.1811 in30 mm | 1.5748 in40 mm | 0.3937 in10 mm | |||||
| Contact Angle | 60 º | |||||||||
| C0 - Static Radial Rating (per row) | 2600 lbf11400 N | |||||||||
| Ce - Dynamic Radial Rating (per row) | 2140 lbf9500 N | |||||||||
| Limiting Speed (Grease) (per row) | 7300 rpm | |||||||||
| Limiting Speed (Oil) | 14600 rpm | |||||||||
| Ball Type | STEEL | |||||||||
| Cage Type | CR - Phenolic Outer Land Riding Cage | |||||||||
| Bearing Weight | 0.09 lb0.04 Kg | 0.18 lb0.08 Kg | 0.27 lb0.12 Kg | 0.36 lb0.16 Kg | 0.09 lb0.04 Kg | |||||
| R - Inner Ring "To Clear" Radius1 | 0.031 in0.8 mm | |||||||||
| r - Outer Ring "To Clear" Radius2 | 0.031 in0.800 mm | |||||||||
| da - Inner Ring Backing Diameter | 0.855 in21.717 mm | |||||||||
| Da - Outer Ring Backing Diameter | 0.879 in22.327 mm | |||||||||
| World Part Number | ||||||||||
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