AKMH41C-ACKNCA1K Kollmorgen
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The Kollmorgen AKMH41C-ACKNCA1K is a hygienic stainless steel washdown motor from the AKMH Stainless Servomotors series. It features an IP69K protection class and a 1.4404 (316L) stainless steel housing, with a flange diameter of 114 mm and a shaft diameter of 19 mm. This motor supports a peak torque of 5.75 Nm, a standstill torque of 1.77 Nm, and allows an axial load up to 1400 N.
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Product Description:
The AKMH41C-ACKNCA1K is a hygienic stainless steel washdown motor manufactured by Kollmorgen for the AKMH Stainless Servomotors series. Its 1.4404 (316L) stainless housing, a washdown-rated shaft seal, and FDA-approved O-ring flange sealing let the unit remain in place during caustic foam and high-pressure cleaning. Delivered with a preassembled one-meter cable for AKD drives, the motor supplies rotary motion to conveyors, fillers, and mixers without a holding brake. It uses flange-mounted IEC geometry to simplify installation in sanitary automation cells. The fixed cable arrangement also removes the need for a separate motor connector at the housing.
Electrical behavior is built around a maximum bus voltage of 640 VDC. Winding type C has 21.3 Ω resistance and 66.1 mH inductance, so the stator draws 1.46 A at standstill and produces 1.77 Nm of continuous torque. Short overloads can reach 5.75 Nm, and the torque constant of 1.25 Nm/A links current to output with predictable linearity. Position and speed are reported through an 11-bit Smart Feedback Device (SFD3) encoder, giving the drive the rotor data needed for closed-loop motion control. A rotor inertia of 0.81 kg cm² and length code 1 support rapid response, while a 40-minute thermal time constant describes heat buildup during steady operation. This combination suits applications that need steady low-speed torque and brief overload capability during startup or index moves. The motor is sealed to IP69K, and mineral-filled PTFE elements resist chemical attack during washdown.
Mechanically, the motor fits the AKMH4 frame with a flange diameter of 114 mm, an 80 mm pilot, and IM B5 mounting per DIN 748 / DIN 6885 T1. The pilot and flange arrangement support accurate centering on the machine face during mounting. The closed-keyway shaft measures 19 mm and can accommodate radial forces up to 450 N and axial forces up to 1400 N. Motor length is 166.7 mm, overall surface roughness stays below 0.8 µm, and the IEC flange mount carries a mass of 6.1 kg. The compact length leaves room for coupling guards and hose-down clearances in enclosed machine sections.
Frequently Asked Questions about AKMH41C-ACKNCA1K:
Q: What housing material is used for the AKMH41C-ACKNCA1K servomotor?
A: The AKMH41C-ACKNCA1K servomotor is built with 1.4404 (316L) stainless steel housing, providing corrosion resistance for hygienic environments.
Q: How is the AKMH41C-ACKNCA1K motor protected against water and dust ingress?
A: This model has an IP69K shaft seal, making it highly resistant to high-pressure and high-temperature washdowns.
Q: What type of encoder is included with the AKMH41C-ACKNCA1K and what is its resolution?
A: The AKMH41C-ACKNCA1K is equipped with a Smart Feedback Device (SFD3) encoder that provides 11-bit resolution.
Q: What is the peak torque rating of the AKMH41C-ACKNCA1K servomotor?
A: The maximum peak torque delivered by the AKMH41C-ACKNCA1K motor is 5.75 Nm.
Q: What is the shaft configuration and diameter for the AKMH41C-ACKNCA1K motor?
A: The AKMH41C-ACKNCA1K features a closed keyway shaft with a diameter of 19 mm, compliant with DIN 748 and DIN 6885 T1 standards.
