The Shenghe BL90 is a 48V 400W L-type BLDC gear motor in the 90mm frame size — the mid-class option between the lightweight BL80 (60-120W) and the heavy BL104 (200-1000W). Three reduction ratios (30:1 / 40:1 / 100:1) step the 3000 rpm motor down to between 30 rpm and 100 rpm output, with torque between 31 N·m and 102 N·m. The 20mm hollow output shaft (17mm optional) and 104mm PCD mounting flange make this build fit AGV mid-class traction (50-200 kg payload), rotary platforms, indexing tables and packaging-line drives.
Production photos of the BL90 400W variant showing the L-type planetary gearbox, 20mm hollow output shaft, NBSHZL nameplate, and the controller pairing.
Sourced from the factory product overview and price list. All values are factory-rated.
| Parameter | Value |
|---|---|
| Factory designation | 90BL / 5GU-90 |
| Rated voltage | 48V DC (compatible 48V-220V bus) |
| Rated power | 400 W |
| Rated speed (motor) | 3000 rpm |
| Motor rated torque (pre-reduction) | ≈ 1.27 N·m |
| Frame size | 90mm |
| Output configuration | L-type planetary, in-line hollow shaft |
| Hollow shaft (standard) | 20 mm |
| Hollow shaft (optional) | 17 mm |
| Mounting flange | 104 mm PCD |
| Reduction ratio options | 30:1 / 40:1 / 100:1 |
| Gearbox transmission efficiency | ~80% |
| Duty cycle | S1 (continuous) |
| Hall sensor signals | HU / HV / HW + 5V / GND |
| Certifications | ISO 9001, CE, RoHS |
Three reduction ratios share the same motor + gearbox housing — choose based on target output torque and speed.
| Reduction ratio | Output speed (rpm) | Output torque (N·m, at 80% gearbox eff) | Typical application |
|---|---|---|---|
| 1 : 30 | 100 rpm | ≈ 31 N·m | Lighter conveyors, packaging line drives, indexing fixtures |
| 1 : 40 | 75 rpm | ≈ 41 N·m | AGV mid-class wheel drive (50-200 kg payload), rotary platforms |
| 1 : 100 | 30 rpm | ≈ 102 N·m | Indexing tables, slow-speed lifting, packaging end-of-line drives |
The 90BL frame shares one mechanical envelope (104mm PCD, 20mm hollow shaft) across two power levels. Step up to BL104 for higher continuous power.
| Variant | Power | Motor torque (pre-reduction) | Output torque @ 1:100 | EXW Ningbo (motor only) |
|---|---|---|---|---|
| 90BL-200W | 200 W | ≈ 0.64 N·m | ≈ 51 N·m | ~$53 USD |
| 90BL-400W (this page) | 400 W | ≈ 1.27 N·m | ≈ 102 N·m | ~$67 USD |
For higher continuous power (750W / 1000W) step up to the 104BL frame — see /48v-1000w-bldc-gear-motor/ for the BL104 SKU page. For smaller envelope and lower power (60W / 120W in a 80mm frame), see /48v-120w-bldc-gear-motor/.
Same factory line means single warranty, single engineering contact.
Mid-class production applications across automation, AGV and packaging.
Two BL90-400W motors at 1:40 ratio deliver 75 rpm wheel speed and 41 N·m torque per wheel — sufficient for warehouse indoor AGV, light outdoor AMR and goods-to-person picking carts. The compact 90mm envelope fits cabinet-mounted AGV chassis where the BL104 is too tall.
1:100 ratio gives 30 rpm output at 102 N·m, well-suited to indexing fixtures, rotary welding tables and CNC tool changers. Hall-sensor commutation keeps acoustic noise low for cleanroom and lab installations.
Capping, labelling, filling and feed drives where 30-100 N·m output torque is required from a quiet S1 continuous-duty motor. The 20mm hollow shaft accepts pass-through pneumatic or sensor lines for compact packaging machine builds.
Estimated 25 minutes from load calculation to RFQ-ready specification.
Compute required output Nm and rpm. Cross-check against the 3-ratio table to pick the right ratio with 1.5-2× load torque headroom.
20mm standard for new designs. Choose 17mm only if mating an existing drive shaft of that diameter. Custom cross-sections on RFQ.
BLD6010 (DC 80-220V) for scalable systems; BLD22010 (DC 18-60V) for strict 48V-only builds.
104mm PCD flange. 8-wire cable bundle (UL1007 thick + thin gauge). Default 1000mm length.
BLD6010 PID auto-tune → 100-hour break-in at 80% load → full S1 continuous duty.
Concise B2B answers.
≈ 102 N·m at 1:100 ratio. 41 N·m at 1:40, 31 N·m at 1:30 (all at 80% gearbox efficiency).
20mm standard, 17mm optional. Custom cross-sections + keyway on RFQ.
BL90 (200W-400W band, 20mm shaft, 104 PCD) is the compact mid-class. BL104 (200W-1000W band, 25mm shaft, 120 PCD) is the heavier option with more power headroom.
BLD6010 (DC 80-220V) or BLD22010 (DC 18-60V) — both 10A continuous, PID closed-loop, RS232/485.
Yes. Hall-sensor 3-phase commutation, designed for 24/7 industrial duty.
AGV mid-class traction (50-200 kg payload), rotary platforms, indexing tables, packaging machinery.
200W (~$53) / 400W (~$67) USD EXW Ningbo. Both share PCD + shaft + ratio options.
2-3 weeks production, 7-10 day sample. 10+ unit orders at catalogue price. Payment: T/T 30/70, PayPal samples, L/C above USD 30k.
Include voltage, reduction ratio, hollow shaft size, kit configuration and target quantity.
