AKMH51H-ACKNCA1K Kollmorgen
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The Kollmorgen AKMH51H-ACKNCA1K is a hygienic stainless steel washdown motor from the AKMH Stainless Servomotors series. It features a 316L stainless steel housing, flange mounting according to IEC, and an IP69K protection class. The motor delivers a continuous stall torque of 3.95 N-m, a peak stall torque of 11.11 N-m, and is equipped with a Smart Feedback Device encoder.
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Product Description:
The AKMH51H-ACKNCA1K is a hygienic stainless-steel washdown motor built by Kollmorgen for the AKMH Stainless Servomotors series. Classified in industrial automation as a hygienic actuator, it drives motion axes that must withstand caustic cleaners and direct spray in food or pharmaceutical lines. The AKMH5 frame size gives a medium power envelope, and the design is supplied without a holding brake, so external static load retention is required.
Electromagnetic performance centers on a continuous stall torque of 3.95 N-m that can be delivered while drawing only 5.68 Arms of phase current. Dynamic events are handled through a peak stall capability of 11.11 N-m at up to 18 Arms. The winding’s torque constant is 0.711 N-m/Arms, and its back-EMF constant reaches 51.3 Vrms/kRPM, which supports drive tuning and voltage selection. Electrical losses are moderated by 1.85 Ω dc resistance and 7.9 mH of phase inductance. A Smart Feedback Device (SFD3) encoder with 11-bit resolution reports position and speed through the pre-assembled one-meter AKD cable, whose jacket is made from mineral-filled PTFE for chemical resistance. Rotor inertia of 0.000342 kg·m² and the shortest rotor length code 1 support fast acceleration profiles.
The mechanical interface follows IEC flange mounting in IM B5 style; the mounting face spans 148 mm across an FDA-approved O-ring, while a 110 mm pilot centers the motor. The cylindrical body, machined from 1.4404 (316L) stainless steel, measures 132 mm in diameter and carries an overall IP69K rating. The shaft seal matches the same washdown standard. A closed keyway shaft with a diameter of 24 mm and a length of 50 mm meets DIN 748 and DIN 6885 T1 tolerances, and surface machining is held below < 0.8 µm to reduce bacterial buildup.
Frequently Asked Questions about AKMH51H-ACKNCA1K:
Q: What type of encoder and resolution does the AKMH51H-ACKNCA1K servomotor use?
A: This model uses a Smart Feedback Device (SFD3) as its encoder type and provides 11-bit resolution.
Q: What is the continuous stall torque provided by the AKMH51H-ACKNCA1K motor?
A: The AKMH51H-ACKNCA1K offers continuous stall torque of 3.95 N-m.
Q: What material is used for the housing of the AKMH51H-ACKNCA1K servomotor?
A: The housing is made from 1.4404 (316L) stainless steel to support hygienic and washdown applications.
Q: What level of ingress protection does the AKMH51H-ACKNCA1K motor provide?
A: The AKMH51H-ACKNCA1K is built to an IP69K protection class, making it highly resistant to ingress during high-pressure washdowns.
Q: What type of connection is provided on the AKMH51H-ACKNCA1K for compatible drives?
A: This servomotor features a pre-assembled cable specifically designed for AKD connections.
