BH-626-E-99-246 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen BH-626-E-99-246 is part of the Goldline B and BH Motors series and has a motor diameter of 142 mm with a weight of 29.9 kg. It provides a continuous stall torque of 35.4 N-m and a peak stall torque of 126 N-m. The motor operates with a back EMF constant of 109 Vrms per kRPM, 19.7 Arms continuous stall current, and 0.43 ohms DC resistance.
Internal Product Review
The BH-626-E-99-246 is a Kollmorgen servo motor that delivers strong continuous output with 35.4 N-m continuous stall torque and a 1.8 N-m/Arms torque constant. Peak demand handling is especially impressive, with 126 N-m peak stall torque backed by a 38 min thermal time constant.
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Product Description:
The BH-626-E-99-246 is a brushless AC servo motor produced by Kollmorgen within the Kollmorgen Goldline B and BH Motors series. It is engineered to couple with proprietary drives and deliver tightly regulated motion in pick-and-place modules, indexing tables, and other automated machine axes. By supplying commanded torque in proportion to phase current, the unit converts electrical energy into mechanical rotation for high-precision positioning tasks found throughout industrial automation.
Under continuous operating conditions at the series’ rated ambient temperature of 40 °C, the motor can hold a shaft load at 35.4 N-m while drawing 19.7 Arms from the drive. This steady-state torque is obtained with a magnetic design that yields a torque constant of 1.8 N-m/Arms and a back electromotive force of 109 Vrms/kRPM, values the controller uses for current-loop scaling. The three-phase stator presents a phase resistance of 0.43 ohms and a synchronous inductance of 10.7 mH, both contributing to low copper loss and smooth current regulation. Six rotor poles interact with the winding field, and initial motion must overcome 0.94 N-m of static friction followed by 0.15 N-m/kRPM of viscous damping. A 142 mm outside diameter keeps the frame compact for cabinet or arm mounting.
For short bursts, the electromagnetic stack can reach 126 N-m of shaft torque, provided the drive supplies up to 73.8 Arms in each phase. Dynamic response is aided by a rotor inertia of 0.00304 kg-m², allowing rapid acceleration without excessive overshoot in multi-axis gantries. Thermal energy stored during peaks dissipates through the frame according to a time constant of 38 min, so duty cycles must be planned to stay within winding limits. The assembly weighs 29.9 kg, which balances stiffness with manageable handling during installation.
