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 BCH18LH1533CF6C is a low-inertia Easy Lexium 18 BCH18 servo motor rated for 1.5 kW continuous power. It produces 4.77 N·m nominal torque at 3000 rpm (6000 rpm maximum mechanical speed), draws 9.2 A continuous stall current, and carries a 23-bit multi-turn absolute encoder plus an integrated holding brake on a 100 mm flange.
This low-inertia BCH18 variant pairs with the 1.5 kW LXM18 servo drive at its matched 9.2 A continuous current rating, so drive sizing follows the motor's power class directly rather than the higher 28.8 A maximum permanent current figure. The 23-bit multi-turn absolute encoder keeps track of position through power cycles, which removes the need for a homing move after every drive power-up — useful on axes where re-homing under load costs cycle time. The integrated holding brake (6.5 N·m) keeps an overhung or vertical load from dropping while the drive is disabled, a function the non-brake, incremental-encoder BCH18 variants in this power class cannot provide. Peak stall torque of 14.3 N·m gives roughly 3x headroom over the 4.77 N·m continuous rating for acceleration bursts, and the 2.21 kg.cm² rotor inertia keeps the low-inertia frame responsive for dynamic point-to-point moves.
| 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 | 220 V |
| Continuous stall current | 9.2 A |
| Continuous stall torque | 4.77 N.m, 220 V |
| Continuous power | 1500 W |
| Peak stall torque | 14.3 N.m, 220 V |
| Nominal output power | 1500 W, 220 V |
| Nominal torque | 4.77 N.m, 220 V |
| Nominal speed | 3000 rpm, 220 V |
| Maximum current Irms | at 1.5 kW, 220 V |
| Maximum permanent current | 28.8 A |
| Product compatibility | Motion servo drive motion servo motors motor at 1.5 kW, 220 V |
| Shaft end | Parallel key |
| Shaft diameter | 22.0 mm |
| Shaft length | 45.0 mm |
| Key width | 8.0 mm |
| Feedback type | 23 bits optic multi turn 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 |
| Number of motor poles | 5.0 |
| Rotor inertia | 2.21 kg.cm² |
| Stator resistance | 0.4 Ohm |
| Stator inductance | 3.0 mH |
| Maximum radial force Fr | 686 N |
| Maximum axial force Fa | 196 N |
| Length | 199.5 mm |
| Number of mounting holes | 4 |
| Circle diameter of the mounting holes | 9 mm |
| Width | 199.5 mm |
| Height | 100.0 mm |
| Depth | 152.2 mm |
| Net weight | 5.4 kg |
| Network number of phases | 3 |
| Encoder type | Optic encoder |
| Inertia | 2.21 kg.cm² of brake, 0.0 kg.cm² of motor |
| IP degree of protection | IP67 |
|---|
| Part number | BCH18LH1533CF6C |
|---|---|
| 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 | 6.417 kg |
| Unit Type of Package 2 | S04 |
| Number of Units in Package 2 | 3 |
| Package 2 Height | 30 cm |
| Package 2 Width | 40 cm |
| Package 2 Length | 60 cm |
| Package 2 Weight | 19.251 kg |
| Shipping weight | 5.4 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 9.2 A.
The rated motor power of BCH18 is 1.5 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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