Closed-loop stepper motor
Sanyo Denki SANMOTION Model No. PB (closed-loop stepping system)
Encoder-equipped closed-loop stepper system that avoids step loss, sold as motor plus driver with AC or DC input and pulse, RS-485 or EtherCAT control.
Key specifications
| Ingress protection | motor IP40 |
|---|---|
| Frame sizes | 28, 42, 60, 86 mm |
| Fieldbus | pulse train, RS-485 + parallel I/O, EtherCAT (Type E) |
| Current (max) | 3 A |
| Max stall torque | 0.055–6.1 |
| Encoder | optical incremental 4000x4 = 16000 P/R (also 2000/800 P/R) or battery-less absolute 17-bit single-turn + 16-bit multi-turn |
| Driver supply | AC: 1-ph 100-115 VAC, 1/3-ph 200-230 VAC; DC: 24/48 VDC |
Summarised in our own words from Sanyo Denki Co., Ltd.'s published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2
Notes on this data
Catalogue Ver.12. Sanyo publishes 'max. stall torque' rather than holding torque, so holding_torque fields are omitted. AC types use 42/60/86 mm; DC Type M uses 28/42/60 mm. Geared versions list allowable torque up to 5.5 N.m (60 mm).
Specify Motion is not affiliated with Sanyo Denki Co., Ltd.. Sanyo Denki and SANMOTION Model No. PB (closed-loop stepping system) are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Alternatives that meet or exceed these figures
Engineers often come to us with a Sanyo Denki part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
2-phase closed-loop stepper motors with built-in incremental encoders that replace the ES-M easy-servo line; brake, IP65 and imperial-shaft versions.
| Published maximum | SANMOTION Model No. PB (closed-loop stepping system) | Leadshine CS-M Series |
|---|---|---|
| Holding torque | 6.1 Nm | 12 Nm meets or exceeds |
| Current | 3 A | 6 A meets or exceeds |
3-phase high-voltage closed-loop steppers in NEMA 34/42 (catalogue also lists 17/23) for 220 VAC ES2 drives, 8-20 Nm.
| Published maximum | SANMOTION Model No. PB (closed-loop stepping system) | Leadshine ES2-MH Series (3-phase high … |
|---|---|---|
| Holding torque | 6.1 Nm | 20 Nm meets or exceeds |
| Current | 3 A | 6 A meets or exceeds |
86 mm 2-phase hybrid stepper with 22 windings from 2.2 to ~12 Nm, for CNC and heavier industrial axes.
| Published maximum | SANMOTION Model No. PB (closed-loop stepping system) | NEMA 34 High Torque (M86STH) |
|---|---|---|
| Holding torque | 6.1 Nm | 11.96 Nm meets or exceeds |
| Current | 3 A | 6.2 A meets or exceeds |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
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