Complementary
Maximum mechanical speed	5000 rpm
[Us] rated supply voltage	220 V; 110 V
Network number of phases	Single phase; Three phase
Continuous stall current	2.29 A
Continuous stall torque	1.27 N.m for LXM28 at 2.6 A, 220 V, single phase; 1.27 N.m for LXM28 at 2.6 A, 220 V, three phase; 1.27 N.m for LXM28 at 5.7 A, 110 V, single phase
Continuous power	400 W
Peak stall torque	3.81 N.m for LXM28... at 2.6 A, 220 V, single phase; 3.81 N.m for LXM28... at 2.6 A, 220 V, three phase; 3.81 N.m for LXM28... at 5.7 A, 110 V, single phase
Nominal output power	400 W for LXM28... at 2.6 A, 220 V, single phase; 400 W for LXM28... at 2.6 A, 220 V, three phase; 400 W for LXM28... at 5.7 A, 110 V, single phase
Nominal torque	1.27 N.m for LXM28... at 2.6 A, 220 V, single phase; 1.27 N.m for LXM28... at 2.6 A, 220 V, three phase; 1.27 N.m for LXM28... at 5.7 A, 110 V, single phase
Nominal speed	3000 rpm for LXM28... at 2.6 A, 220 V, single phase; 3000 rpm for LXM28... at 2.6 A, 220 V, three phase; 3000 rpm for LXM28... at 5.7 A, 110 V, single phase
Maximum current Irms	7.73 A for LXM28... at 0.4 kW, 220 V; 7.73 A for LXM28... at 0.4 kW, 110 V
Maximum permanent current	2.52 A
Product compatibility	LXM28... servo drive motor at 0.4 kW, 220 V, single phase; LXM28... servo drive motor at 0.4 kW, 220 V, three phase; LXM28... servo drive motor at 0.4 kW, 110 V, single phase
Shaft end	Keyed
Shaft diameter	14 mm
Shaft length	30 mm
Key width	5 mm
Feedback type	20 bits single turn absolute encoder
Holding brake	Without
Mounting support	Asian standard flange
Motor flange size	80 mm
Electrical connection	Free lead
Torque constant	0.55 N.m/A at 20 °C
Back emf constant	33.5 V/krpm at 20 °C
Number of motor poles	4.0
Rotor inertia	0.67 kg.cm²
Stator resistance	3.2 Ohm at 20 °C
Stator inductance	11.3 mH at 20 °C
Stator electrical time constant	3.53 ms at 20 °C
Maximum radial force Fr	332 N at 3000 rpm
Maximum axial force Fa	115 N
Brake pull-in power	10.2 W
Type of cooling	Natural convection
Length	112 mm
Number of motor stacks	1
Centring collar diameter	70 mm
Centring collar depth	4 mm
Number of mounting holes	4
Mounting holes diameter	6.6 mm
Circle diameter of the mounting holes	90 mm
Distance shaft shoulder-flange	4 mm
Net weight	2 kg
Sizing reference	BCH2
Accuracy error [angular]	0.044 °
Temperature copper hot	135 °C
Temperature magnet hot	100 °C
Temperature magnet rt	20 °C
Inertia	0.0 kg.cm² of brake; 0.66 kg.cm² of motor
Contractual warranty
Warranty (in months)	18
Environment
IP degree of protection	IP54 IM B5, IM V1; IP50 IM V3
Ambient air temperature for operation	-20…40 °C
Main
Range of product	Lexium 28
Range compatibility	Lexium 28
Product or component type	Servo motor
Device short name	BCH2
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	13.9 cm
Package 1 Width	17.2 cm
Package 1 Length	29.5 cm
Package 1 Weight	2.47 kg
Unit Type of Package 2	S03
Number of Units in Package 2	2
Package 2 Height	30 cm
Package 2 Width	30 cm
Package 2 Length	40 cm
Package 2 Weight	5.413 kg
Unit Type of Package 3	P06
Number of Units in Package 3	16
Package 3 Height	80 cm
Package 3 Width	60 cm
Package 3 Length	72 cm
Package 3 Weight	50.304 kg

BCH2 servo motor from the Lexium 28 servo drive series. The BCH2 series includes brushless synchronous AC servo motors with compact dimensions for dynamic applications. This servo has a nominal continuous stall torque of 1.27 Nm. Its winding type is optimized for torque at 3000 rpm and has a low moment of inertia. The nominal power is 400 W. The electrical connection is made via free wires. The motor flange is 80 mm for mounting. A high-resolution 20-bit absolute encoder as a single turn enables precise control. The shaft end is designed for a feather key and complies with protection class IP54. The motor housing corresponds to protection class IP65. There is no holding brake. The associated servo amplifier from the Lexium 28 series is intended for operation: LXM28.U20M3X. Thanks to the Green Premium ecolabel, you can obtain detailed information on material content, environmental impact and circular economy that supports your sustainability goals.