The Bockwoldt CB 3 NF 112 F SL gearbox, part number 21000001909, is a 2-stage spur gear unit designed for mounting IEC standard motors in a B5 mounting position. Featuring a flange design with an A250 standard output flange, a 215 mm flange hole circle, and four 14 mm flange holes, this unit delivers a transmission ratio of 9.86 and a permissible output torque of 700 Nm. It includes heavy SL gearbox bearings, NBR seals on both the drive and output sides, and operates with 0.80 liters of CLP 220 mineral oil within an ambient temperature range of -20 to +40 °C, protected to IP55. The special output shaft measures 40 mm in diameter with an 80 mm length, constructed from C45 material and featuring a 14.2 mm cross-hole drilling without shaft centering. The input shaft has a 28 mm diameter and a 60 mm length. This Bockwoldt gearbox model 21000001909 is supplied without color.
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| Manufacturer | Bockwoldt |
|---|---|
| Country | |
| Part number | 21000001909 |
| Inner Code | 4480630 |
| Product type | CB Series Spur Gearbox |
|---|---|
| Size | CB 3 |
| Transmission type | CB series - Spur gear device for mounting IEC standard mot. |
| Installation position | B5 |
| Translation/ratio [i] | 9.86 |
| Output torque [Nm] | 700 |
| Protection class | IP55 |
| Color | without |
| Ambient temperature [°C] | -20/+40 |
| Number of steps | 2-stage |
| Output shaft design | special |
| Output shaft Ø [mm] | 40 |
| Output sh. length [mm] | 80 |
| Shaft centring hole | without centering |
| Output shaft material | C45 |
| Output Shaft Factory Standard | Cross hole drilling Ø 14.2 mm |
| Mounting type | flange design |
| Output flange | A250 |
| Output flange design | Standard output flange |
| Flange hole circle [mm] | 215 |
| Flange holes | 4x Ø 14 mm |
| Gearbox Bearing | SL - Heavy bearing |
| Gearbox Output Sealing | NBR seal |
| Drive side sealing | NBR seal |
| Oil type | CLP 220 Miner.oil |
| Oil quantity [l] | 0.80 |
| Perm. output torque [Nm] | 700 |
| Input shaft Ø [mm] | 28 |
| Input sh. length [mm] | 60 |