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 BCH18MB01332F5C is a 100 W Easy Lexium 18 BCH18 servo motor with 0.32 N·m continuous stall torque at 1.1 A continuous stall current. It carries a medium-inertia rotor (0.076 kg.cm²) on a compact 40 mm flange, a 23-bit incremental encoder, and an integrated holding brake rated at 0.35 N·m — suited to small vertical or load-holding axes on light machinery.
At 100 W this is the smallest frame in the Easy Lexium 18 BCH18 lineup covered here, and like the rest of the M-series (medium inertia, 0.076 kg.cm²), it suits load-inertia-heavy axes such as small conveyors or indexing tables better than very fast, low-inertia point-to-point moves. Size the matching Lexium 18 (LXM18) drive to the 1.1 A continuous stall current, not the 3.9 A maximum permanent current, which only applies to short accelerating moves. The 0.35 N·m holding brake is worth the extra mass and cost on a vertical axis or wherever the load must stay put when the drive disables; on a horizontal axis with no drift risk, the brakeless BCH18MB0133CA5C on the same 40 mm flange saves weight and cost. The 23-bit incremental encoder is the standard choice when the machine always runs a homing routine at startup. Maximum mechanical speed is rated to 6000 rpm, double the 3000 rpm nominal speed the torque and power figures above are measured at, which leaves margin for brief overspeed on deceleration. The same two-connector power/feedback interface and IP67 sealing used across the Easy Lexium 18 BCH18 range apply here, so this frame drops into the same cable and enclosure design as the larger motors in the line.
| 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 | With |
| Holding torque | 0.35 N.m |
| 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 | 0.076 kg.cm² |
| Stator resistance | 21.0 Ohm |
| Stator inductance | 26.1 mH |
| Maximum radial force Fr | 78 N |
| Maximum axial force Fa | 54 N |
| Type of cooling | Natural convection |
| Length | 132.8 mm |
| Number of mounting holes | 2.0 |
| Circle diameter of the mounting holes | 4.5 mm |
| Width | 132.8 mm |
| Height | 42.0 mm |
| Depth | 50.75 mm |
| Net weight | 0.69 kg |
| Network number of phases | 3 |
| Encoder type | Optic encoder |
| Inertia | 0.076 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 | BCH18MB01332F5C |
|---|---|
| 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 | 800 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 | 9.1 kg |
| Shipping weight | 0.69 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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