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R911279873 (MHD041B-144-PP0-UN)

MHD Synchronous Motors

Rated 4.5 stars (12 total reviews)
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1 Year Warranty Included
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Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping

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The R911279873 (MHD041B-144-PP0-UN) is a synchronous servo motor designed for industrial automation applications, integrating a keyed shaft, bearing, digital servo feedback with integrated encoder, shaft sealing ring, stator, and rotor. It features a motor length 'B', 82 mm flange size, 50 mm centering diameter, and a mass of 4.5 kg. The unit supports continuous torque of 2.7 Nm and continuous current of 7.5 A at standstill, with peak current rated at 34.0 A. The motor offers three pole pairs, winding inductivity of 4.9 mH, and supports up to 7500 rpm with a standard speed of 6000 rpm. The housing is liquid cooled and the enclosure meets IP65 protection. The power and feedback connectors are turnable within a range of 270°. Operation is specified for installation heights up to 1000 m above sea level and in ambient temperatures of 0 to 40°C. The encoder supports absolute position detection exceeding 4096 revolutions. The unit is manufactured without a holding brake and utilizes winding code 144.

Technical Specifications

Use
Drive controllers

Cooling System
Natural convection

Characteristic Speed
6000 rpm

Peak Current
34.0 A

Pole Pairs
3

Winding Inductivity
4.9 mH

Continuous Torque at Standstill
2.7 Nm

Continuous Current at Standstill
7.5 A

Rated Frequency
150 Hz

Rated Voltage
115 V

Rated Current
2.8 A

Rated Torque
1.4 Nm

Maximum Setup Height
1000 meters above sea level

Operating Temperature
0 to 40 degrees

Storage/Transport Temperature
-20 to 80 degrees

Mass
4.5 kg

Protection Degree
IP 65

Maximum Speed
7500 rpm

Encoder
Multiturn absolute encoder

Shaft
With key and sealing ring

Winding Code
144

Cooling Method
Natural convection

What is the advantage of absolute position detection beyond 4096 revolutions?

It eliminates the need for homing after power loss and supports precise multi-turn applications. This improves uptime in automated systems.

Why is a keyed shaft design important in servo motors?

A keyed shaft ensures torque transmission without slippage under dynamic load changes. It also simplifies mechanical coupling alignment during assembly.

How does a 270° turnable power connector simplify integration?

The adjustable angle allows cable routing flexibility in tight enclosures. This minimizes stress on connectors and reduces installation time.

How does the continuous torque rating of 2.7 Nm influence application choices?

It makes the motor suitable for low to medium-torque applications such as indexing tables or feeders. The rating ensures consistent torque delivery without overheating.

What are the integration benefits of having both power and feedback connectors combined?

Combined connectors reduce wiring complexity and potential miswiring issues. They also save space in compact machine layouts.

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Internal Product Review

The MHD041B-144-PP0-UN is a liquid-cooled servo motor from the Bosch Rexroth Indramat MHD series. It delivers 2.7 Nm of continuous torque at standstill and uses digital feedback with an integrated absolute encoder spanning over 4,096 revolutions. It is used in automation systems such as packaging machines, printing presses, and material handling equipment.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MHD041B-144-PP0-UN.
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