VFD vs Servo Drive: Key Differences
A side-by-side comparison of VFD and servo drive motor type, feedback, dynamic response, overload rating, cost, and applications for industrial engineers.
- Part number
- BMH1901P21F2A
- Model no
- BMH
Schneider Electric BMH1901P21F2A Lexium 32 BMH 30 N·m 5000 rpm 190 mm Flange Brake Untapped Shaft Servo Motor
Schneider Electric BMH1901P21F2A Lexium 32 BMH 30 N·m servo motor with brake, 190 mm flange.
Description
About the BMH
About the BMH
The BMH1901P21F2A is a Schneider Electric Lexium 32 BMH medium-inertia servo motor rated 30 N·m continuous stall torque at 5000 rpm maximum mechanical speed, built with a holding brake and an untapped (smooth) shaft on a 190 mm international standard flange. It is IP65-rated as standard (IP67 with the optional kit) and pairs with the LXM32.D72N4, LXM32MD85N4 or LXM32MC10N4 servo drive, using a single-turn SinCos Hiperface encoder (131072 points/turn) for absolute position feedback.
Selection Notes
The 30 N·m continuous stall torque on the BMH1901P21F2A is identical across all three compatible drives (LXM32.D72N4, LXM32MD85N4, LXM32MC10N4), so the drive choice is set by available supply current rather than torque headroom — 24 A, 32 A or 40 A. Pick the smallest-current drive the application allows to limit cabinet size and cost. Against the brake-less BMH1903P21A2A on the same 190 mm frame, this motor trades maximum torque for the 80 N·m holding brake, making it the choice when the axis must hold a vertical or overhauling load with power removed. The smooth untapped shaft and 131072-point/turn encoder resolution (four times the 32768-point encoders on the smaller BMH frames) suit higher-precision positioning tasks at this power class.
Applications
At 4.8-5.18 kW with a holding brake, this motor fits heavier gantry, hoist and lift-axis applications on packaging and material-handling lines where the brake must hold the load when the drive is de-energized.
Specification
Full specification
Main 15
| Device short name | BMH |
|---|---|
| Product or Component Type | Servo motor |
| Maximum mechanical speed | 4000 rpm |
| Continuous stall torque | 265.5 lbf.in (30 N.m) LXM32.D72N4 24 A, 400 V, three phase, 265.5 lbf.in (30 N.m) LXM32.D72N4 24 A, 480 V, three phase, 265.5 lbf.in (30 N.m) LXM32MD85N4 32 A, 400 V, three phase, 265.5 lbf.in (30 N.m) LXM32MD85N4 32 A, 480 V, three phase, 265.5 lbf.in (30 N.m) LXM32MC10N4 40 A, 400 V, three phase, 265.5 lbf.in (30 N.m) LXM32MC10N4 40 A, 480 V, three phase |
| Peak stall torque | 687.7 lbf.in (77.7 N.m) LXM32.D72N4 24 A, 400 V, three phase, 687.7 lbf.in (77.7 N.m) LXM32.D72N4 24 A, 480 V, three phase, 766.5 lbf.in (86.6 N.m) LXM32MD85N4 32 A, 400 V, three phase, 766.5 lbf.in (86.6 N.m) LXM32MD85N4 32 A, 480 V, three phase, 793.9 lbf.in (89.7 N.m) LXM32MC10N4 40 A, 400 V, three phase, 793.9 lbf.in (89.7 N.m) LXM32MC10N4 40 A, 480 V, three phase |
| Nominal output power | 4800 W LXM32.D72N4 24 A, 400 V, three phase, 4800 W LXM32.D72N4 24 A, 480 V, three phase, 5180 W LXM32MD85N4 32 A, 400 V, three phase, 5180 W LXM32MD85N4 32 A, 480 V, three phase, 5180 W LXM32MC10N4 40 A, 400 V, three phase, 5180 W LXM32MC10N4 40 A, 480 V, three phase |
| Nominal torque | 162.9 lbf.in (18.4 N.m) LXM32.D72N4 24 A, 400 V, three phase, 162.9 lbf.in (18.4 N.m) LXM32.D72N4 24 A, 480 V, three phase, 146.04 lbf.in (16.5 N.m) LXM32MD85N4 32 A, 400 V, three phase, 146.04 lbf.in (16.5 N.m) LXM32MD85N4 32 A, 480 V, three phase, 146.04 lbf.in (16.5 N.m) LXM32MC10N4 40 A, 400 V, three phase, 146.04 lbf.in (16.5 N.m) LXM32MC10N4 40 A, 480 V, three phase |
| Nominal speed | 2500 rpm LXM32.D72N4 24 A, 400 V, three phase, 2500 rpm LXM32.D72N4 24 A, 480 V, three phase, 3000 rpm LXM32MD85N4 32 A, 400 V, three phase, 3000 rpm LXM32MD85N4 32 A, 480 V, three phase, 3000 rpm LXM32MC10N4 40 A, 400 V, three phase, 3000 rpm LXM32MC10N4 40 A, 480 V, three phase |
| Product compatibility | LXM32.D72N4 400...480 V three phase |
| Shaft end | Smooth shaft |
| IP Degree of Protection | IP65 standard, IP67 with IP67 kit |
| Speed feedback resolution | 131072 points/turn |
| Holding brake | With |
| Mounting Support | International standard flange |
| Electrical Connection | Rotatable right-angled connectors |
Complementary 40
| Range Compatibility | Lexium 32 |
|---|---|
| [Us] rated supply voltage | 480 V |
| Phase | Three phase |
| Continuous stall current | 23.2 A |
| Continuous power | 5.24 W |
| Maximum current Irms | 89.61 A LXM32.D72N4 |
| Maximum permanent current | 89.6 A |
| Second shaft | Without second shaft end |
| Shaft diameter | 1.5 in (38 mm) |
| Shaft length | 3.1 in (80 mm) |
| Feedback type | Single turn SinCos Hiperface |
| Holding torque | 708.06 lbf.in (80 N.m) holding brake |
| Motor flange size | 7.5 in (190 mm) |
| Number of motor stacks | 1 |
| Torque constant | 1.3 N.m/A 248 °F (120 °C) |
| Back emf constant | 87.6 V/krpm 248 °F (120 °C) |
| Number of motor poles | 5.0 |
| Rotor inertia | 71.7 kg.cm² |
| Stator resistance | 0.24 Ohm 68 °F (20 °C) |
| Stator inductance | 2.54 mH 68 °F (20 °C) |
| Stator electrical time constant | 21.2 ms 68 °F (20 °C) |
| Maximum radial force Fr | 3730 N 1000 rpm |
| Maximum axial force Fa | 0.2 x Fr |
| Brake pull-in power | 40 W |
| Type of cooling | Natural convection |
| Length | 9.8 in (250 mm) |
| Centring collar diameter | 7.09 in (180 mm) |
| Centring collar depth | 0.2 in (4 mm) |
| Number of mounting holes | 4 |
| Mounting holes diameter | 0.6 in (14 mm) |
| Circle diameter of the mounting holes | 8.5 in (215 mm) |
| Net Weight | 45.2 lb(US) (20.5 kg) |
| Sizing reference | BMH1901P |
| Network number of phases | 3 |
| Accuracy error [angular] | 1.4 ° |
| Temperature copper hot | 275 °F (135 °C) |
| Temperature magnet hot | 212 °F (100 °C) |
| Temperature magnet rt | 68 °F (20 °C) |
| Output current 3s peak | 89.61 A |
| Inertia | 4.1 kg.cm² of brake, 67.72 kg.cm² of motor |
Contractual warranty 1
| Warranty (in months) | 18 |
|---|
Show all 69 specifications ↓ Show less ↑13 more values in Identification, Logistics.
Identification 8
| Part number | BMH1901P21F2A |
|---|---|
| Type designation | BMH |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 3606485264042 |
Logistics 5
| Country of origin | DE |
|---|---|
| Shipping weight | 20.5 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
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Quick answers
Questions about the BMH
What is the rated current of BMH?
The rated current of BMH is 23.2 A.
What motor power is BMH rated for?
The rated motor power of BMH is 4.8 kW.
What is the HS code of BMH for customs?
The tariff (HS) code on file for BMH is 850152.
What is the EAN of BMH?
The EAN (GTIN) of BMH is 3606485264042.
Where does BMH ship from, and how fast?
BMH ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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