The Bosch Rexroth R151221014 (type SEM-E-S 25x5Rx3-4) is a genuine ball screw nut with 25 mm, 5 mm right-hand, 19,100 N. RendatSP supplies it new and original, ready to ship worldwide.
Rexroth ball screw assemblies convert rotary motion into precise linear motion on CNC machines, injection moulding machines and automation axes. When a nut wears or loses preload, positioning accuracy drops; an identical replacement nut by material number restores the original diameter, lead, ball size and flange pattern.
Technical Specifications
| Brand | Bosch Rexroth |
|---|---|
| Material number | R151221014 |
| Type designation | SEM-E-S 25x5Rx3-4 |
| Nut type | SEM-E-S flanged single nut, Standard series, low-friction seal |
| Nominal diameter | 25 mm |
| Lead | 5 mm right-hand |
| Ball diameter | 3 mm (from code) |
| Circuits | 4 (from code) |
| Dynamic load rating C | 19,100 N (T3/T5) |
| Static load rating C0 | 27,200 N (T3/T5) |
| Preload options | C0, C00, C1 |
| Tolerance options | T3, T5, T7 |
| Mass | 0.44 kg |
| Flange dia | 63 mm |
| Hole pattern | BB7, M6 lube port |
| Condition | New, original, factory packaged |
How to Read the Type Code SEM-E-S 25x5Rx3-4
| SEM-E-S | single flanged nut, standard series |
|---|---|
| 25 | nominal diameter mm |
| 5R | lead 5 mm, right-hand |
| 3 | ball diameter mm |
| 4 | number of ball circuits |
Rexroth type codes are configuration-specific: a different letter or number in any position gives a different material number. Always compare the full code with the nameplate of your original part.
Typical Applications
Feed axes of machine tools and automation Supplied to factories, OEMs and maintenance teams in Saudi Arabia, the UAE, Iraq, Qatar, Kuwait, Oman, Egypt and worldwide.
Related Parts
- R151231014 (32×5)
Frequently Asked Questions
Is the R151221014 a genuine Bosch Rexroth part?
Yes. RendatSP supplies the R151221014 as a new, original Bosch Rexroth part in factory packaging. We confirm the exact type code against your nameplate before shipping.
Can I replace only the nut?
Yes, if the screw shaft is in good condition and the diameter, lead and ball size match.
What do the numbers in 25x5R mean?
25 mm nominal diameter, 5 mm lead, right-hand thread.
Can you supply the complete ball screw assembly?
Yes, complete assemblies with machined ends can be quoted on request with a drawing.
Request a Quotation
Send us the part number R151221014, the required quantity and a photo of the nameplate if available. We reply with price and delivery time within hours and ship worldwide by express courier. Browse all Bosch Rexroth parts.
