TSUBAKI H-7BDRD0049 Gear Motor | GMS200F35 Radar Antenna Drive Motor | JRC Marine Radar Antenna Motor | Marine Spare Parts

TSUBAKI H-7BDRD0049 GMS200F35 Marine Radar Antenna Drive Motor

From the nameplate and construction shown in your photos, this unit is manufactured by TSUBAKI (Tsubakimoto Chain Co., Ltd., Japan) and is a BLDC geared motor (Type: GMS200F35). This model is commonly used as the antenna drive motor inside JRC marine radar scanners, where it rotates the radar antenna at a constant speed for reliable target detection.

The nameplate shows:

• Manufacturer: TSUBAKI (Tsubakimoto Chain Co., Ltd.)
• Model: H-7BDRD0049
• Type: GMS200F35
• Motor: BLDC200-8P
• Reduction Ratio: 1:35
• Rated Current: 1.7 A
• Speed: Approximately 55 r/min (output)
• Protection Class: IP20
• Country of Origin: Japan

SM MARINE SERVICE™ supplies new, used, and professionally reconditioned marine radar motors and navigation spare parts for vessels worldwide.

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What Is the TSUBAKI GMS200F35?

The TSUBAKI GMS200F35 is a precision brushless DC geared motor developed for continuous industrial and marine applications. In JRC radar systems, it is installed inside the radar scanner where it drives the antenna rotation mechanism.

Stable antenna rotation is essential because the radar transmitter and receiver rely on constant rotational speed to generate accurate 360° radar images. Any variation in motor speed can affect target detection, heading stability, and radar performance.

The BLDC motor and integrated reduction gearbox provide:

• Stable antenna rotation
• High positioning accuracy
• Low maintenance
• Long service life
• Quiet operation
• High reliability under continuous operation

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Main Features

• Genuine TSUBAKI geared motor
• Brushless DC (BLDC) motor technology
• Integrated precision reduction gearbox
• Smooth and constant rotational speed
• Compact industrial design
• Low vibration
• Low noise
• Long operational life
• High efficiency
• Marine-grade reliability
• Designed for continuous 24/7 operation
• Made in Japan

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Main Components

The motor assembly includes:

• Brushless DC motor
• Precision reduction gearbox
• Output drive shaft
• Drive pinion gear
• Bearings
• Rotor assembly
• Stator assembly
• Motor controller interface
• Electrical connector
• Housing and mounting flange

SM MARINE SERVICE™ can assist in sourcing compatible motors, gear assemblies, bearings, and replacement radar drive components.

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Marine Applications

The TSUBAKI H-7BDRD0049 / GMS200F35 is commonly used in:

• JRC Marine Radar Systems
• Radar Scanner Antennas
• Open Array Radar
• X-Band Radar
• S-Band Radar
• Navigation Radar
• Commercial Cargo Ships
• Oil Tankers
• Bulk Carriers
• Container Ships
• Offshore Vessels
• Passenger Ships
• Naval Vessels

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Common Problems & Troubleshooting

Antenna Does Not Rotate

Possible causes:

• Motor failure
• Gearbox damage
• Motor controller fault
• Power supply problem
• Seized bearings

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Slow Rotation Speed

Possible causes:

• Gear wear
• Mechanical friction
• Low supply voltage
• Internal motor wear

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Abnormal Noise

Possible causes:

• Bearing damage
• Gear wear
• Shaft misalignment
• Lack of lubrication (gear assembly)

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Radar Rotation Alarm

Possible causes:

• Encoder or speed feedback fault
• Gearbox seizure
• Motor controller malfunction
• Broken drive coupling

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Preventive Maintenance

To maximize service life:

• Inspect motor mounting bolts.
• Check gear wear periodically.
• Keep electrical connectors clean.
• Monitor motor current.
• Inspect bearings for noise.
• Verify antenna rotation speed.
• Check for water ingress.
• Replace worn gears before failure.
• Perform insulation testing during scheduled maintenance.

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Why Ships Continue Using TSUBAKI Radar Motors

TSUBAKI gear motors are widely respected in the marine industry because they offer:

• Extremely high reliability
• Long operational life
• Excellent speed stability
• Low maintenance
• Proven performance
• Genuine Japanese manufacturing quality
• Easy integration into existing radar systems

Many vessels continue operating with original TSUBAKI motors for decades when properly maintained.

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Frequently Asked Questions (FAQ)

What is the TSUBAKI H-7BDRD0049?
It is a brushless geared motor used to rotate JRC marine radar antennas.

What is GMS200F35?
It is the motor type designation used by TSUBAKI for this geared motor assembly.

Can this motor be repaired?
Yes. Depending on the fault, bearings, gears, connectors, or internal components may be repaired or replaced.

Is it compatible with JRC radar systems?
Yes. It is commonly used in JRC marine radar scanner assemblies.

Do you supply replacement motors?
Yes. SM MARINE SERVICE™ supplies new, used, and professionally reconditioned replacement units.

Do you ship worldwide?
Yes. We export marine navigation and automation spare parts worldwide.

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Short Product Description

The TSUBAKI H-7BDRD0049 GMS200F35 is a Japanese-made brushless geared motor designed for JRC marine radar antenna drive systems. It provides smooth, stable, and reliable antenna rotation, ensuring accurate radar performance for commercial and offshore vessels.

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User Manual & Technical Resources

Available documentation may include:

• TSUBAKI GMS200F35 Manual
• H-7BDRD0049 User Manual
• JRC Radar Scanner Service Manual
• Radar Antenna Maintenance Guide
• Marine Radar Spare Parts Catalogue
• Installation Manual
• Electrical Wiring Guide
• Troubleshooting Manual

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Why Choose SM MARINE SERVICE™

SM MARINE SERVICE™ supplies genuine and replacement marine navigation equipment and spare parts to ship owners, managers, and shipyards worldwide.

We provide:

• New Equipment
• Used Equipment
• Professionally Reconditioned Equipment
• Genuine & Alternative Spare Parts
• Worldwide Shipping
• Equipment Sourcing
• Repair Services
• Technical Support
• Marine Navigation Spare Parts
• Radar Equipment & Components

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SM MARINE SERVICE™

Bangladesh Office
Samir Market, DT Road, Beside CDA Market, Pahartali, Chattogram, Bangladesh

China Warehouse & Support Center
Shanghai, China

Website
www.smmarineservice.com

Email
info@smmarineservice.com

WhatsApp
+8801818929292

Marketing Contact
Nazmul Hasan Bhuiyan

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