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AKMH64K-ACKNCA1K Kollmorgen

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The Kollmorgen AKMH64K-ACKNCA1K is a hygienic stainless steel washdown motor in the AKMH Stainless Servomotors series. It features a continuous stall torque of 18 N-m, continuous stall current of 8.74 Arms, and an IP69K protection class. The motor has a flange diameter of 186 mm, is made with 316L stainless steel housing, and uses a mineral filled PTFE material.

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Product Description:

The AKMH64K-ACKNCA1K is a hygienic stainless steel washdown motor produced by Kollmorgen within the AKMH Stainless Servomotors series. Designed for wet-area automation tasks such as meat processing or pharmaceutical filling lines, the motor delivers closed-loop rotary positioning without an internal holding brake and instead relies on drive torque for holding. A pre-assembled cable matched to AKD drives simplifies hookup on machines that require rapid sanitation and regular washdown cycles.

The unit produces a continuous stall torque of 18 N·m while drawing a continuous stall current of 8.74 Arms. This combination indicates the steady load the shaft can hold without overheating during continuous operation. The torque constant is 2.09 N·m/Arms, so the controller can relate output torque directly to phase current. A back-EMF constant of 146.5 Vrms/kRPM links shaft speed to generated voltage and supports accurate field-oriented control. The phase inductance of 11.8 mH smooths current transitions and helps the AKD drive maintain tight regulation. Powered from 480 Vac, the motor reaches a rated speed of 2500 rpm, and the 11-bit Smart Feedback Device encoder supports fine indexing. The rotor inertia is 0.00316 kg-m², the rotor length code is 4, the attached cable length is 1 meter, and the dimensions align with the AKMH6 frame envelope.

Mechanically, the stator housing is machined from 1.4404 stainless steel with a surface roughness below 0.8 µm, and an FDA-approved O-ring seals the 186 mm flange. Mineral-filled PTFE gaskets support IEC flange mounting, while the 130 mm pilot centers the motor. Phase resistance of 1.43 Ω helps limit I²R heating as the rotor accelerates toward 3020 rpm. A closed keyway on the 32 mm shaft is protected by a shaft seal, and the enclosure meets the IP69K protection class. The assembly weighs 26.7 kg and installs in the IM B5 orientation in accordance with DIN 748 and DIN 6885-T1.

Back Emf Constant
146.5 Vrms/kRPM
Connection Description
Pre-assembled cable for AKD
Continuous Stall Current
8.74 Arms
Continuous Stall Torque
18 N-m
Dc Resistance
1.43 Ω
Encoder Type
Smart Feedback Device (SFD3)
Flange Diameter
186 mm
Flange Sealing
O-Ring (FDA approved)
Frame Size
AKMH6
Holding Brake
No brake
Housing Material
1.4404 (316L) Stainless Steel
Inductance
11.8 mH
Length
1 meter
Material
Mineral filled PTFE
Max Speed (480 Vac)
3020 rpm
Motor Weight
26.7 kg
Mounting Type
Flange mounting IEC
Pilot Diameter
130 mm
Product Type
Hygienic Stainless Steel Washdown Motor
Protection Class
IP69K
Rated Speed (480 Vac)
2500 rpm
Resolution
11 bit
Rotor Inertia
0.00316 kg-m²
Rotor Length
4
Shaft Diameter
32 mm
Shaft Seal
IP69K shaft seal
Shaft Type
Closed keyway
Standard
DIN 748 / DIN 6885 T1
Standard Style
IM B5
Surface Roughness
< 0.8 µm
Torque Constant
2.09 N-m/Arms
  • AKMH64K
  • AKMH64K/ACKNCA1K
  • AKMH64KACKNCA1K
  • AKMH64K ACKNCA1K

Frequently Asked Questions about AKMH64K-ACKNCA1K:

Q: What is the continuous stall torque of the AKMH64K-ACKNCA1K motor?

A: The AKMH64K-ACKNCA1K servomotor offers continuous stall torque of 18 N-m for demanding motion control tasks.

Q: What housing material is used in the AKMH64K-ACKNCA1K servomotor?

A: This motor is constructed from 1.4404 (316L) stainless steel, providing excellent corrosion resistance in harsh environments.

Q: What level of environmental protection does the AKMH64K-ACKNCA1K offer?

A: The product achieves IP69K protection class, enabling it to withstand high pressure and high temperature washdown procedures.

Q: What are the shaft specifications of the AKMH64K-ACKNCA1K motor?

A: With a shaft diameter of 32 mm and a closed keyway, this model ensures reliable shaft coupling in precision applications.

Q: Which encoder type and resolution are included on the AKMH64K-ACKNCA1K?

A: The smart feedback device (SFD3) encoder on this motor provides 11-bit resolution for accurate positioning.


Internal Product Review

  • ‘‘The AKMH64K-ACKNCA1K is a hygienic stainless steel washdown motor built with 316L stainless steel and IP69K protection for demanding sanitary machinery. Continuous stall torque of 18 N-m and rated speed of 2500 rpm give the servomotor strong low-speed output with an efficient operating range. The SFD3 encoder supports accurate feedback, making the motor an excellent choice for washdown motion systems.’’

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