The Shenghe BL80 is a 48V 120W L-type BLDC gear motor in the 80mm frame size — the lightest gear motor in the BL-series, sized for compact automation cells, packaging machinery, lab equipment and lightweight AGV / AMR traction. Four reduction ratios (30:1 / 40:1 / 50:1 / 136:1) make this build flexible across speed regimes, with the 1:136 high-ratio option unique to the BL80 frame for very slow controlled motion (22 rpm output at 39-52 N·m). The 15mm hollow output shaft and 94mm PCD mounting flange fit cabinet automation where larger frames won't.
Production photos of the BL80 120W variant showing the L-type planetary gearbox, 15mm hollow output shaft, NBSHZL nameplate, and the compact 80mm envelope suited to cabinet-mounted automation.
Sourced from the factory product overview and price list.
| Parameter | Value |
|---|---|
| Factory designation | 80BL / 4GU-80 |
| Rated voltage | 48V DC (compatible 48V-220V bus) |
| Rated power | 120 W |
| Rated speed (motor) | 3000 rpm |
| Motor rated torque (pre-reduction) | ≈ 0.38 N·m |
| Frame size | 80mm |
| Output configuration | L-type planetary, in-line hollow shaft |
| Hollow shaft | 15 mm |
| Mounting flange | 94 mm PCD |
| Reduction ratio options | 30:1 / 40:1 / 50:1 / 136:1 |
| 1:136 high-ratio note | Unique to BL80 — not offered on BL90/BL104/BL120 frames |
| Gearbox transmission efficiency | ~80% (typical); slightly lower at 1:136 high-ratio |
| Duty cycle | S1 (continuous) |
| Hall sensor signals | HU / HV / HW + 5V / GND |
| Certifications | ISO 9001, CE, RoHS |
Four ratios share the same housing — the 1:136 ratio is uniquely available on the BL80 frame.
| Reduction ratio | Output speed (rpm) | Output torque (N·m, at 80% gearbox eff) | Typical application |
|---|---|---|---|
| 1 : 30 | 100 rpm | ≈ 9 N·m | Lab pumps, light-load conveyor drives, fast indexing |
| 1 : 40 | 75 rpm | ≈ 12 N·m | Light AGV / AMR wheel drive (under 50 kg payload), packaging feed drives |
| 1 : 50 | 60 rpm | ≈ 15 N·m | Compact rotary platforms, sorting indexers, lab automation |
| 1 : 136 (high-ratio) | 22 rpm | ≈ 39-52 N·m | Slow-motion indexing tables, packaging slow-feed drives, semi-auto assembly fixtures |
The 80BL frame supports two power tiers in the same 80mm envelope.
| Variant | Power | Motor torque (pre-reduction) | Output torque @ 1:50 | EXW Ningbo (motor only) |
|---|---|---|---|---|
| 80BL-60W | 60 W | ≈ 0.19 N·m | ≈ 7.6 N·m | ~$38 USD |
| 80BL-120W (this page) | 120 W | ≈ 0.38 N·m | ≈ 15 N·m | ~$42 USD |
For higher continuous power (200W / 400W) step up to the 90BL frame — see /48v-400w-bldc-gear-motor/ for the BL90 SKU page.
Same factory line means single warranty, single engineering contact. For 120W at 48V, the BLD22010 is the matched controller.
Compact-envelope applications across automation, lab, packaging and lightweight AGV.
Cabinet-mounted automation machines where the 80mm frame is the largest motor that fits the enclosure. Feed, sort, index drives with 1:40 or 1:50 ratio give 60-75 rpm output, suitable for general-purpose actuation.
The 1:136 high-ratio option (22 rpm output, ~39-52 N·m) is purpose-built for slow controlled motion — capping, slow-feed, semi-automated assembly fixtures. Hall-sensor commutation keeps acoustic noise low for high-cadence indoor lines.
3-phase BLDC commutation is mandatory for mass spec, HPLC and precision dosing pumps where vibration and EMI matter more than peak torque. The 80mm envelope fits benchtop instruments. See /brushless-motor-for-medical-equipment/.
Two BL80-120W motors at 1:40 ratio drive a lightweight AGV chassis (under 50 kg payload) — picking carts, indoor service robots, delivery platforms. See /bldc-motor-for-agv/.
Estimated 25 minutes from load calculation to RFQ-ready specification.
Compute required output Nm and rpm. Cross-check against the 4-ratio table — note the 1:136 ratio gives ≈ 4× the output torque of 1:30 with proportionally slower speed.
1:136 is for slow controlled motion. For general AGV mid-class use, 1:40 is the typical choice. For indexing, 1:50 or 1:136 both work.
BLD22010 (DC 18-60V) for 48V-only deployments (preferred — lower idle current). BLD6010 (DC 80-220V) if system may scale higher.
94mm PCD flange. 8-wire bundle (UL1007). Default 1000mm cable; longer or custom connectors at factory line.
BLD22010 PID auto-tune → 100-hour break-in at 80% load → full S1 continuous duty. Vibration is naturally low due to 3-phase Hall commutation.
Concise B2B answers.
≈ 15 N·m at 1:50. ≈ 39-52 N·m at 1:136 high-ratio (slower output). 9-12 N·m at lower ratios.
Unique to the BL80. For slow controlled motion (22 rpm output) where small envelope matters — indexing tables, slow-feed packaging, semi-auto assembly.
Yes. The BL80 qualifies — 80mm frame, 3-phase Hall-sensor BLDC, suited to cobot joints, lab automation, medical pumps, packaging.
BL80 (60W-120W, 80mm, 15mm shaft, 94 PCD) for smallest envelope. BL90 (200W-400W, 90mm, 20mm shaft, 104 PCD) for more power.
BLD22010 (DC 18-60V) preferred for 48V-only. BLD6010 (DC 80-220V) for systems that may scale.
Compact automation, packaging (slow-feed), lab equipment, medical pumps, lightweight AGV under 50 kg payload.
60W (~$38) / 120W (~$42) 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 (especially if 1:136 high-ratio is needed), hollow shaft, kit configuration and target quantity.
