KOWA JAPAN Elevator Traction Machine | KOWA JAPAN Gearless Traction Motor
KOWA JAPAN elevator traction machine is a high-performance permanent magnet synchronous gearless traction motor (PMSM), built to power vertical transportation systems with exceptional energy efficiency, operational reliability and ultra-low noise. Adopting cutting-edge PM (Permanent Magnet) synchronous motor technology, this gearless traction machine follows modern elevator industry trends for compact footprint, high power output and low power consumption. It is applicable for installation in both conventional Machine Room (MR) and Machine Room-Less (MRL) elevator setups.
KOWA JAPAN traction machine is the efficient core component for contemporary vertical transport, suitable for low-rise, mid-rise residential buildings and busy high-rise commercial complexes. The advanced permanent magnet synchronous gearless motor technology balances high efficiency, heavy load capacity and near-silent running, meeting current market demands for energy sustainability and passenger riding comfort. Its streamlined compact structure optimizes hoistway space utilization, which is highly valuable for construction projects with limited shaft space, delivering superior build quality and stable performance as premium elevator core equipment.
Core Mechanical Parameters
| Item |
Data |
| Roping Ratio |
2:1 |
| Allowable Radial Load |
3000 kg |
| Rated Insulation Voltage |
500 V |
| Number of Poles |
32 |
| IP Protection Code |
IP41 |
| Number of Starts per Hour |
180 |
| Brake Current |
2 × 1.4 A |
| Brake Voltage |
DC110 V |
| Sheave Pitch Diameter |
400 mm |
| Wrapping Angle β |
96 ° |
| Groove Angle γ |
35 ° |
Rated Performance Table
| Rated Loading (kg) |
Rated Speed (m/s) |
Rated Torque (N·m) |
Machine Weight (kg) |
Brake Torque (N·m) |
Rope Sheave Groove |
Pitch (mm) |
Rated Power (kW) |
Rated Current (A) |
Rated Frequency (Hz) |
| 550 |
1 |
96 |
360 |
285 |
4×Ø10 |
15 |
3.6 |
8.7 |
25.5 |
| 550 |
1.75 |
167 |
360 |
285 |
4×Ø10 |
15 |
6.3 |
14.4 |
44.5 |
| 630 |
1 |
96 |
412 |
285 |
2×Ø15 |
15 |
4.1 |
10 |
25.4 |
| 630 |
1.75 |
167 |
412 |
285 |
4×Ø10 |
15 |
7.2 |
16.5 |
44.5 |
| 800 |
1 |
96 |
502 |
297 |
2×Ø68 |
15 |
5.9 |
11.5 |
25.4 |
| 800 |
1.75 |
167 |
514 |
297 |
2×Ø68 |
15 |
11.7 |
21 |
44.5 |
| 900 |
1 |
96 |
630 |
307 |
5×Ø10 |
15 |
7.9 |
26 |
25.4 |
| 900 |
1.75 |
167 |
634 |
307 |
5×Ø10 |
15 |
11.7 |
26 |
44.5 |
| 1000 |
1 |
96 |
669 |
307 |
5×Ø10 |
15 |
6.9 |
14 |
25.4 |
| 1050 |
1 |
96 |
686 |
307 |
2×Ø858 |
15 |
6.9 |
16 |
25.4 |
| 1050 |
1.75 |
167 |
686 |
307 |
2×Ø858 |
15 |
12 |
26.7 |
44.5 |
Building & Project Application
Selection of MR or MRL configuration depends entirely on individual project requirements.
- High-Rise & Heavy-Duty Commercial Projects The KOWA JAPAN Machine Room (MR) traction machine is the preferred option. It supports higher operating speeds and larger load capacities, delivering consistent stable performance for high-rise towers and high-traffic commercial premises.
- Residential & Low-to-Mid Rise Commercial Projects The KOWA JAPAN Machine Room-Less (MRL) traction machine is the ideal solution. Its compact design removes the requirement for a dedicated machine room to save building space. Ultra-low noise and high-efficiency operation make it perfectly suited for apartments, hotels and office buildings where noise control and space optimization are primary concerns.
- Elevator Modernization & Retrofit Projects The KOWA JAPAN MRL traction machine is widely selected for old elevator renovation projects. It brings modern PMSM technology and substantial energy saving benefits without the extra space demand of a machine room. Meanwhile, the MR version serves as a high-performance direct replacement for existing machine-room-type elevator systems.
Key Product Advantages
- Adopts advanced Permanent Magnet Synchronous gearless motor technology for outstanding energy efficiency
- Ultra-low noise operation to improve passenger comfort
- Compact footprint design, saves building space and optimizes hoistway layout
- Robust mechanical structure, heavy allowable radial load up to 3000kg
- IP41 protection grade, reliable operation under normal building environments
- Wide load range from 550kg up to 1050kg, speed options of 1.0 m/s and 1.75 m/s
- Dual brake design for high brake torque, guarantees elevator safety
- Suitable for new elevator installation and elevator modernization projects
KOWA JAPAN Elevator Traction Machine Technical Data & Dimensions:
Q1: Is KOWA JAPAN traction machine genuine Japanese origin?
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A: Yes. This KOWA JAPAN gearless traction motor is originally engineered and designed in Japan, following strict Japanese industrial standards for elevator traction equipment. It delivers stable, durable performance built on decades of Japanese elevator motor R&D and manufacturing know-how.
Q2: What elevator types can KOWA JAPAN KJM-40 traction machine fit?
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A: The KJM-40 model supports both Machine Room (MR) and Machine Room-Less (MRL) elevators. It covers rated loads from 550kg to 1050kg with two standard speed selections: 1.0 m/s and 1.75 m/s, for residential, hotel, office and commercial building elevators.
Q3: What is the duty cycle of this KOWA JAPAN traction machine?
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A: It is rated for 180 starts per hour. This heavy-duty rating makes it suitable for high-traffic commercial buildings as well as daily continuous use in residential buildings.
Q4: What safety features does this traction machine have?
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A: It comes with dual brake system. The brake works at DC110V with high brake torque, providing reliable holding and emergency braking function. IP41 protection also safeguards internal motor components against dust and solid object intrusion.
Q5: Can I use KOWA JAPAN traction machine for elevator modernization / retrofit projects?
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A: Absolutely. Both MR and MRL versions are widely used for elevator renovation. The compact MRL variant is a great upgrade choice for old elevators, while the MR model can directly replace many traditional machine-room traction machines.
Q6: How quiet is this Japanese PMSM traction machine?
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A: Thanks to permanent magnet synchronous gearless design, it runs at ultra-low noise levels. The gearless structure eliminates gear vibration and noise, creating smooth, quiet riding experience critical for residential buildings and hotels.
Q7: What rope size & roping ratio does KJM-40 support?
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A: Standard roping ratio is 2:1. The sheave pitch diameter is 400mm, compatible with different rope groove configurations as listed in the technical table.
Q8: What is the energy-saving advantage compared with traditional geared motors?
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A: The Japanese PM synchronous gearless design cuts power consumption significantly. It removes gearbox friction loss, offering higher efficiency and lower long-term operating cost for building owners.
Q9: What maintenance requirement does the KOWA JAPAN traction machine need?
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A: Without a gearbox, there is no gear oil replacement required. Routine inspection of brake function, rope wear and fastener tightening is sufficient, reducing annual maintenance workload and cost.
Q10: What is the maximum allowable radial load of this machine?
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A: The allowable radial load reaches up to 3000 kg, ensuring strong mechanical stability and long service life under heavy elevator working conditions.
