Y2EJ Series 6-Pole Electromagnetic Brake Motor
Six-pole squirrel-cage induction motor with integral DC electromagnetic disc brake, running at approximately 960 rpm with fail-safe positive stopping on power interruption. Preferred for heavy conveyor drives, slow-speed lifting equipment, and large agitators where the lower shaft speed reduces drivetrain complexity and the integral brake provides mandatory load-holding without a separate external brake unit.
Power: 0.18 – 22 kW
Frames: 71M – 180L
Brake: DC Spring-Applied
Protection: IP54
Insulation: Class F
High-Torque Low-Speed Brake Motor for Heavy Industrial Drives
The Y2EJ 6-pole brake motor runs at approximately 960 rpm, delivering 50% more shaft torque than a 4-pole motor of the same power rating at the same frame size. This inherently higher torque output means that a smaller gearbox reduction ratio is needed for a given load speed, reducing gearbox size, cost, and the number of gear stages between motor and load. In applications where load speed is in the range of 20 to 100 rpm, a 6-pole motor with a single-stage worm gearbox frequently achieves the required output without a two-stage gearbox assembly.
The integral spring-applied DC electromagnetic brake operates identically to the 2-pole and 4-pole variants. Spring force holds the friction disc against the rotor hub at rest; DC current energises the electromagnet to release the brake when the motor starts. On power interruption, the brake engages in under 0.3 seconds, holding the load without external braking force. Brake torque is adjustable by modifying the spring preload, and the friction disc lining is field-replaceable.
Frame sizes span 71M through 180L, covering 0.18 kW to 22 kW. All units carry IP54 protection, Class F insulation, and CE marking. The 6-pole variant is particularly common in gate and barrier drives, slow-speed agitators, and escalator auxiliary drives where 960 rpm provides the right balance between torque and operating speed.
View the full brake motor range on the Electromagnetic Brake Motors page, or browse matched reducers in the Worm Gear Reducers section.
Y2EJ 6-Pole Model Specifications
All 6-pole models: ~960 rpm, 380 V 50 Hz, IP54, Class F. Brake voltage: DC 205 V (rectified from 380 V AC supply).
| Model | Frame | kW | Full-Load A | η % | cosφ | Brake Torque (N·m) | Stop Time (s) | kg |
|---|---|---|---|---|---|---|---|---|
| Y2EJ71M1-6 | 71M | 0.18 | 0.74 | 55.0 | 0.65 | 2.5 | < 0.30 | 12.0 |
| Y2EJ71M2-6 | 71M | 0.25 | 1.00 | 58.0 | 0.66 | 3.5 | < 0.30 | 13.5 |
| Y2EJ80M1-6 | 80M | 0.37 | 1.42 | 61.0 | 0.68 | 5.0 | < 0.30 | 20.0 |
| Y2EJ80M2-6 | 80M | 0.55 | 2.02 | 64.0 | 0.69 | 7.0 | < 0.30 | 22.5 |
| Y2EJ90S-6 | 90S | 0.75 | 2.68 | 67.5 | 0.70 | 10.0 | < 0.30 | 31.0 |
| Y2EJ90L-6 | 90L | 1.1 | 3.72 | 70.0 | 0.71 | 14.0 | < 0.30 | 37.5 |
| Y2EJ100L-6 | 100L | 1.5 | 4.90 | 73.0 | 0.72 | 20.0 | < 0.30 | 52.0 |
| Y2EJ112M-6 | 112M | 2.2 | 6.60 | 76.5 | 0.73 | 30.0 | < 0.30 | 70.0 |
| Y2EJ132S-6 | 132S | 3.0 | 8.40 | 78.0 | 0.74 | 40.0 | < 0.30 | 98.0 |
| Y2EJ132M1-6 | 132M | 4.0 | 10.80 | 79.5 | 0.74 | 55.0 | < 0.30 | 118.0 |
| Y2EJ132M2-6 | 132M | 5.5 | 14.60 | 81.0 | 0.75 | 70.0 | < 0.30 | 136.0 |
| Y2EJ160M-6 | 160M | 7.5 | 19.80 | 83.0 | 0.76 | 100.0 | < 0.30 | 178.0 |
| Y2EJ160L-6 | 160L | 11 | 28.50 | 84.5 | 0.77 | 140.0 | < 0.30 | 210.0 |
| Y2EJ180L-6 | 180L | 15 | 38.60 | 85.5 | 0.77 | 200.0 | < 0.30 | 255.0 |
Motor and Brake Conditions
| Ambient temperature | −15 °C to +40 °C |
| Motor supply | 380 V 50 Hz 3-phase |
| Brake supply | DC 205 V (from rectifier) |
| Brake action | Spring-applied / EM-released |
| Brake engage time | < 0.3 s |
| Protection | IP54 (motor and brake) |
| Insulation class | Class F |
| Mounting | IMB3 / IMB5 / IMB35 |
| Manual brake release | Lever (optional) |
Standards and Certifications
| Motor design | IEC 60034 |
| Brake standard | IEC 60947-4 |
| Frame dimensions | IEC 72-1 |
| Protection rating | IEC 60529 |
| Quality management | ISO 9001 |
| Marking | CE |
| Poles | 6-pole |
| Duty cycle | S1 / S3 (cyclic) |
Typical Applications for Y2EJ 6-Pole Brake Motors
Heavy-Duty Conveyors
Bulk material handling conveyors and steep incline belt conveyors in mining and aggregate processing use the 6-pole brake motor to combine the high starting torque of a slow-speed winding with fail-safe brake holding against loaded belt rollback on power loss.
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Large Agitators
Top-entry agitators on chemical and pharmaceutical vessels use the 6-pole brake motor to hold the shaft and impeller stationary during vessel pressurisation, cleaning cycles, and maintenance, preventing rotation from residual fluid drag forces on the impeller.
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Vertical Lifts and Gates
Food processing vertical lifts, sluice gates, and dam control mechanisms use the 6-pole brake motor for its high torque and positive load holding, which prevents gate movement under hydraulic pressure when the motor is de-energised.
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Ski Lift Auxiliary Drives
Haul rope tensioning systems and auxiliary bull-wheel drives on ski lifts use 6-pole brake motors for their low operating speed, high torque, and the mandatory fail-safe braking required under cable transport safety regulations.
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Kiln Turning Gear
Auxiliary turning gear motors on cement and lime rotary kilns use 6-pole brake motors to rotate the kiln shell slowly during cool-down, preventing thermal distortion of the shell. The brake holds the kiln in the rest position when turning is not required.
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Stage Curtain Drives
Fire curtain and safety curtain drives in theatres and public buildings use 6-pole brake motors because their low speed and high torque allow direct drive of the winding drum without a multi-stage gearbox, and the fail-safe brake holds the curtain at the set position.
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Torque Advantage of the 6-Pole Configuration in Brake Motor Applications
Higher Shaft Torque at Same Power
Motor shaft torque equals power divided by angular velocity. At 960 rpm, a 6-pole motor produces 50% more shaft torque than a 4-pole motor of the same rated power at 1440 rpm, and three times the torque of a 2-pole motor at 2880 rpm. For a 4 kW motor, this is the difference between 26.5 N·m (2-pole), 26.5 N·m (4-pole at 1440 rpm) and 39.8 N·m (6-pole at 960 rpm). This higher available torque means a smaller gearbox reduction ratio is needed for any given load torque requirement, directly reducing gearbox cost and weight.
Reduced Kinetic Energy at Brake Engagement
The kinetic energy stored in a rotating motor rotor equals half the rotor inertia multiplied by the square of angular velocity. At 960 rpm, the rotor of a 6-pole motor stores 56% less kinetic energy than the same frame rotor spinning at 1440 rpm and 88% less than at 2880 rpm. This substantially reduces the thermal energy dissipated in the brake disc lining on each stop, extending lining service life by two to three times compared to the same number of stops on a 2-pole motor of equivalent power in the same frame.
Gearbox Stage Elimination
A load requiring 20 rpm output with 200 N·m load torque would need a 4-pole motor running at 1440 rpm through a 72:1 gearbox, typically requiring a two-stage helical or two-stage worm arrangement. With a 6-pole brake motor at 960 rpm, a single-stage worm gearbox at 48:1 achieves the same output, removing one gear stage from the drivetrain. Single-stage elimination reduces drivetrain backlash, oil volume, maintenance frequency, and the number of shaft seals that can leak over time.
Frequently Asked Questions — Y2EJ Series 6-Pole Brake Motor
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Specify power (kW), required brake torque, duty cycle, mounting configuration, and any gearbox pairing requirements. Learn about our capabilities at the About Us page.
Yderligere information
| Editor | Cxm |
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