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.
The Schneider Electric BCH18MB01332A5C is a medium-inertia Easy Lexium 18 BCH18 servo motor rated for 100 W continuous power. It delivers 0.32 N·m nominal torque at 3000 rpm (6000 rpm maximum mechanical speed), draws 1.1 A continuous stall current, and carries a 23-bit incremental encoder on a compact 40 mm flange without a holding brake.
This medium-inertia BCH18 variant is the smallest frame in the family and pairs with the 100 W LXM18 servo drive at its 1.1 A continuous current rating — far below the 9.2-18.6 A continuous currents of the 1.5-3.0 kW BCH18 motors, so drive and cabling can be sized accordingly. The medium-inertia rotor (0.07 kg.cm²) suits low-inertia-ratio applications like small pick-and-place axes better than a low-inertia motor of the same power would, since the mismatch between motor and load inertia stays smaller. The 23-bit incremental encoder needs a homing move at startup; no multi-turn or brake option exists in this 40 mm frame. Peak stall torque of 1.12 N·m gives roughly 3.5x headroom over the 0.32 N·m continuous rating for acceleration bursts.
| Range of product | Lexium 18 |
|---|---|
| Range compatibility | Lexium 18 |
| Product or component type | Servo motor |
| Device short name | BCH18 |
| Maximum mechanical speed | 6000.0 rpm |
|---|---|
| [Us] rated supply voltage | 200...240 V |
| Continuous stall current | 1.1 A |
| Continuous stall torque | 0.32 N.m, 220 V |
| Continuous power | 100 W |
| Peak stall torque | 1.12 N.m, 220 V |
| Nominal output power | 100 W, 220 V |
| Nominal torque | 0.32 N.m, 220 V |
| Nominal speed | 3000 rpm, 220 V |
| Maximum permanent current | 3.9 A |
| Shaft end | Parallel key |
| Shaft diameter | 8 mm |
| Shaft length | 25 mm |
| Key width | 3 mm |
| Feedback type | 23 bits optic incremental encoder |
| Holding brake | Without |
| Mounting support | Asian standard flange |
| Motor flange size | 40 mm |
| Electrical connection | 2 connectors male/female |
| Torque constant | 0.29 N.m/A at 40 °C |
| Back emf constant | 21.0 V/krpm at 40 °C |
| Number of motor poles | 5.0 |
| Rotor inertia | 0.07 kg.cm² |
| Stator resistance | 21.0 Ohm |
| Stator inductance | 26.1 mH |
| Maximum radial force Fr | 78 N |
| Maximum axial force Fa | 54 N |
| Length | 89.1 mm |
| Number of mounting holes | 2.0 |
| Circle diameter of the mounting holes | 4.5 mm |
| Width | 89.1 mm |
| Height | 42.0 mm |
| Depth | 50.75 mm |
| Net weight | 0.43 kg |
| Network number of phases | 3 |
| Encoder type | Optic encoder |
| Inertia | 0.0 kg.cm² of brake, 0.07 kg.cm² of motor |
| IP degree of protection | IP67 |
|---|---|
| Ambient air temperature for operation | 0…40 °C |
| Part number | BCH18MB01332A5C |
|---|---|
| Type designation | BCH18 |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| Warranty (in months) | 18 |
|---|
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 9.2 cm |
| Package 1 Width | 9.1 cm |
| Package 1 Length | 26.8 cm |
| Package 1 Weight | 500 g |
| Unit Type of Package 2 | S03 |
| Number of Units in Package 2 | 12 |
| Package 2 Height | 30.0 cm |
| Package 2 Width | 29.9 cm |
| Package 2 Length | 39.8 cm |
| Package 2 Weight | 6.2 kg |
| Shipping weight | 0.43 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of BCH18 is 1.1 A.
The rated motor power of BCH18 is 0.1 kW.
The tariff (HS) code on file for BCH18 is 850152.
BCH18 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
A side-by-side comparison of VFD and servo drive motor type, feedback, dynamic response, overload rating, cost, and applications for industrial engineers.
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