AKMH53L-ACKNCA1K Kollmorgen
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The Kollmorgen AKMH53L-ACKNCA1K is a washdown motor from the AKMH Stainless Servomotors series, constructed with 316L stainless steel housing and an IP69K protection class for hygienic applications. It features a peak torque of 26.9 Newton-meters, a peak current of 35.4 Amps, and a flange diameter of 148 millimeters. The motor uses a smart feedback device encoder with 11-bit resolution and supports a maximum bus voltage of 640 VDC.
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Product Description:
The AKMH53L-ACKNCA1K belongs to the AKMH Stainless Servomotors series manufactured by Kollmorgen. It is a hygienic stainless-steel washdown motor intended for direct integration into food, beverage, or pharmaceutical automation where frequent high-pressure cleaning is required. By combining a seamless 1.4404 stainless housing with IEC flange mounting, the unit delivers rotary motion in environments that cannot tolerate paint, coatings, or exposed fasteners. Its washdown-oriented design also helps reduce areas where residue can collect during routine sanitation cycles.
The motor’s flange measures 148 mm in diameter and the unit weighs 13.4 kg, while a 110 mm pilot centers the IM B5 mounting pattern on the machine frame. An FDA-approved O-ring seals the flange, and surface roughness stays below 0.8 µm so cleaning fluids can drain more easily. A 24 mm closed-keyway shaft exits through a shaft seal, and the complete assembly carries an IP69K enclosure rating. Internal geometry follows DIN 748 and DIN 6885 T1, and the motor uses frame size AKMH5 with rotor length code 3 in an overall length of 1 m. Electrical performance includes a back-EMF constant of 63.6 Vrms/kRPM and a torque constant of 0.90 N·m/A, while the winding has 3.64 mH of inductance and 0.71 Ω of resistance. Up to 640 VDC can be supplied on the DC bus through a pre-assembled AKD cable, and with that bus the motor can reach a peak torque of 26.9 N·m. There is no brake installed, and the Smart Feedback Device encoder supports commutation through a ten-pole motor design.
A radial bearing limit of 635 N pairs with an axial capacity of 1740 N for sustained mechanical loading. Dynamic bursts can draw up to 35.4 A, and the SFD3 interface processes feedback at a resolution of 11 bit, which works with the rotor inertia of 0.000912 kg·m² for smooth speed control. The motor also has a thermal lag time of 69 minutes before winding temperature stabilizes, which helps it absorb short process transients. The stator is vacuum impregnated and potted with mineral-filled PTFE to improve resistance to chemicals used in washdown environments.
Frequently Asked Questions about AKMH53L-ACKNCA1K:
Q: What shaft configuration and size does the AKMH53L-ACKNCA1K servomotor provide?
A: The AKMH53L-ACKNCA1K utilizes a closed keyway shaft with a diameter of 24 mm, machined according to DIN 748 and DIN 6885 T1 standards.
Q: What protection and material features are present in the AKMH53L-ACKNCA1K for washdown applications?
A: This model is built from 1.4404 (316L) stainless steel and has an IP69K protection class, making it suitable for high-pressure washdown environments.
Q: What are the maximum axial and radial load ratings for the AKMH53L-ACKNCA1K motor?
A: The AKMH53L-ACKNCA1K can handle a maximum axial load of 1740 N and a maximum radial load of 635 N on its shaft.
Q: How is the AKMH53L-ACKNCA1K motor electrically connected to a drive?
A: The motor features a pre-assembled cable designed for direct compatibility with AKD servo drives.
Q: What encoder and resolution does the AKMH53L-ACKNCA1K use for feedback?
A: This servomotor provides position feedback via a Smart Feedback Device (SFD3) encoder with 11-bit resolution.
