Retrofit fit — dimensions and flange
The BEH18MF1033CA5C measures 107.9 mm square by 89.9 mm deep, with an 80 mm Asian standard flange and four mounting holes. The shaft is 19.0 mm diameter with a 35.0 mm parallel key — drops directly into any machine originally built for this Lexium 18 frame size. No second shaft end and no holding brake — if the existing motor had a brake for vertical-axis holding, this unit won't fill that role without a separate external brake and controller.
Continuous stall torque is 3.18 Nm at 220 V single-phase, with a nominal speed of 3000 rpm delivering 1 kW continuous output. Peak stall torque reaches 11.13 Nm — roughly 3.5× the continuous rating — for acceleration and short-duration overloads. The torque constant is 0.539 Nm/A at 40 °C, and the back EMF constant is 33.9 V/krpm. These numbers let the drive tune current loops accurately; if you're swapping in a different motor brand, the drive's autotune routine needs these values or the velocity loop will oscillate.
Feedback and environmental sealing
The optic encoder provides 23-bit multi-turn absolute position feedback — 8,388,608 counts per revolution, enough for sub-arc-minute positioning without a secondary encoder. No battery backup needed for multi-turn counts; the encoder tracks absolute position across power cycles. IP67 rating means the motor body and connector seal survive washdown — suitable for food processing, packaging, or any line where hoses are the cleaning method. Air-cooled, so keep the ambient air path clear of debris.