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 BCH18LH20332F6C is a low-inertia Easy Lexium 18 BCH18 servo motor rated for 2.0 kW continuous power with an integrated holding brake. It produces 6.37 N·m nominal torque at 3000 rpm (6000 rpm maximum mechanical speed), draws 13.2 A continuous stall current, and pairs a 23-bit incremental encoder with a 100 mm flange.
This brake-equipped, incremental-encoder BCH18 variant sizes to the 2.0 kW LXM18 servo drive at its 13.2 A continuous rating, identical to the non-brake version in this power class — the brake adds holding torque, not current draw. The 6.5 N·m holding brake keeps a vertical or overhung axis from dropping when the drive is disabled, which the non-brake 2.0 kW BCH18 cannot do. The 23-bit incremental encoder gives fine closed-loop resolution but requires a homing move at every power-up, since it does not retain absolute position like the multi-turn variants in this family. Peak stall torque of 19.1 N·m leaves headroom for acceleration bursts well above the 6.37 N·m continuous rating, and the brake's added mass brings rotor inertia to 2.74 kg.cm², slightly higher than the non-brake version's 2.64 kg.cm².
| 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 | 13.2 A |
| Continuous stall torque | 6.37 N.m, 220 V |
| Continuous power | 2000 W |
| Peak stall torque | 19.1 N.m, 220 V |
| Nominal output power | 2000 W, 220 V |
| Nominal torque | 6.37 N.m, 220 V |
| Nominal speed | 3000 rpm, 220 V |
| Maximum permanent current | 41 A |
| Shaft end | Parallel key |
| Shaft diameter | 22.0 mm |
| Shaft length | 45.0 mm |
| Key width | 8.0 mm |
| Feedback type | 23 bits optic incremental encoder |
| Holding brake | With |
| Holding torque | 6.5 N.m |
| Mounting support | Asian standard flange |
| Motor flange size | 100 mm |
| Electrical connection | 2 connectors male/female |
| Torque constant | 0.48 N.m/A at 40 °C |
| Back emf constant | 32.8 V/krpm at 40 °C |
| Number of motor poles | 5.0 |
| Rotor inertia | 2.74 kg.cm² |
| Stator resistance | 0.23 Ohm |
| Stator inductance | 1.97 mH |
| Maximum radial force Fr | 686 N |
| Maximum axial force Fa | 196 N |
| Length | 214.5 mm |
| Number of mounting holes | 4.0 |
| Circle diameter of the mounting holes | 9.0 mm |
| Width | 214.5 mm |
| Height | 100.0 mm |
| Depth | 152.2 mm |
| Net weight | 6.2 kg |
| Network number of phases | 3 |
| Encoder type | Optic encoder |
| Inertia | 2.74 kg.cm² of brake, 0.0 kg.cm² of motor |
| IP degree of protection | IP67 |
|---|---|
| Ambient air temperature for operation | 0…40 °C |
| Part number | BCH18LH20332F6C |
|---|---|
| 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 | 27.5 cm |
| Package 1 Width | 18.4 cm |
| Package 1 Length | 36.6 cm |
| Package 1 Weight | 6.5 kg |
| Unit Type of Package 2 | S04 |
| Number of Units in Package 2 | 3 |
| Package 2 Height | 30.0 cm |
| Package 2 Width | 39.7 cm |
| Package 2 Length | 59.8 cm |
| Package 2 Weight | 19.6 kg |
| Shipping weight | 6.2 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 13.2 A.
The rated motor power of BCH18 is 2 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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