China Custom Slewing Gear Box for Tower Crane Transmission sequential gearbox

Product Description

Product Description



Hammer head cranes
Flat top cranes
Luffing tower cranes
Passenger hoist
Suspended platform
Spare parts

CHINAMFG Crane Spare Parts


ELMAK CRANE (ZheJiang ) CO., LTD offers a comprehensive ONE-STOP tower crane spare parts center. We supply spare parts for all major crane brands, ensuring that your equipment is always operating at its best.


  • One-Stop Tower Crane Spare Parts Center
  • Supplying spare parts for all major crane brands

Trust CHINAMFG CRANE for all your crane spare parts needs!

Product Parameters



ELMAK CRANE (ZheJiang ) CO., LTD offers a wide range of spare parts to keep your crane running smoothly. Our spare parts inventory includes:

  • Fixing angles
  • Mast sections
  • Pins
  • Ladders
  • Slewing rings
  • Motors
  • Gear boxes
  • Pinions
  • Limit switches
  • Winches
  • Wire ropes
  • Electrical cables
  • Contactors
  • Pulleys
  • Rollers
  • RCV
  • VAC
  • OMD
  • HRCV
  • Brushes

Keep your crane in top condition with genuine CHINAMFG CRANE spare parts.

No. Performance Parameter Output gear Weight RCVseries JHFseries Recommended for tower cranes
Torque motor  Inverter motor 
Transmission ratio Output torque (kg) Motor rated stall torque Motor Power
(N·m) (N.m) (kW) (t·m)
JH07 176 6000 m=10,z=12,x=+0.32 90 75,95 4.4,5.5 40~125
JH08 164
JH13 143 9000 m=10,z=13,x=+0.5 130 95,120 5.5 63~160
JH13C 162
JH02 163 12000 m=12,z=12,x=+0.5 150 145,185 9 160~250
JH02C 192
JH17 200 18000 m=16,z=12,x=+0.5 240   11,15 315~630
JH15 160 24000 m=18,z=14,x=+0.5 410   11,15 450~900
JH10A 287 35000 m=20,z=12,x=+0.5 860   18.4 900~2200

Our Advantages



ISO 9001 is implemented strictly within all the manufacturing process. CHINAMFG products have all the necessary certificates and meet the relevant International Standards and Codes.



We make sure that the spare parts CHINAMFG customers need are in stock in your country or can be delivered with Express post services. All the electrical components are purchased only from verified European suppliers.



We pride ourselves in making high-quality products and offer an extended warranty for CHINAMFG cranes as a part of the Service agreement for maintenance and repair services.



Painting of your CHINAMFG tower crane can be tailored to suit your Company’s color and provide extra-protection for demanding weather conditions.

Company Profile

Established in 2003, CHINAMFG is a rapidly growing tower cranes manufacturer, whose reputation has been built on agile manufacturing, reliable service and competitive prices.

We are devoted to find the best solutions for our customers, improve production efficiency and reliability, save construction cost, introduce and apply the latest technologies in our products.

CHINAMFG provides the full series of high-quality construction machinery and overall solutions for construction sites. We have become a reliable partner in the field of design, cost estimation, manufacturing, sales, rental, maintenance, montage and after-sale services of the tower cranes for construction companies in more than 20 countries.

We are in an CHINAMFG of change, and change is opportunity. We must have strategic confidence and enhance our ability to adapt. We can’t cling to what has worked or what we have gained, because past success is not a reliable indicator of the future. In the end, a long list of accomplishments might end up nothing more than an epitaph. This is a vital fact that we must recognize. Moving forward, we need to hone our skills, step up to the plate, and aim for the stars. I would like to thank our customers and partners for your ongoing trust and support.

Let’s keep working closely, putting our best minds together to build a Better Connected World.
We give individual attention to every single detail to ensure that our clients are carefully looked after by professional management and well-trained staff. From conceptual plHangZhou through supply and on-going management, we tailor our package to meet the modern day demand. 



At ELMAK  we’ve  united an experienced team of designers and engineers to create and manufacture high-quality innovative products, that fully conform to the international standards.


We have a strict quality control and pay much attention to safety. All the raw materials are bought only from the trustworthy suppliers and carefully checked by the specialists.



  1. 3D design and analysis before production drawing;

  2. ANSYS calculation;

  3. Testing and verification of the calculation result;

  4. Raw material inspection and manufacturing quality control strictly according to ISO9000 standard;

  5. Robot welding machine and automatic cutting machine;

  6. Painting line with first anti-corrosion layer and 2 surface layers after sandblasting;

  7. Packing solution to make better protection and easy transportation

Packaging & Shipping

Our services

CHINAMFG Tower Cranes



Elmak tower cranes come in hammerhead, flat top, and luffing jib varieties, offering different hook heights, jib lengths, and capacities to suit various construction needs.

Not sure which crane to choose?

Share your requirements with us, and we will guide you in selecting the most suitable tower crane for your construction site.

CHINAMFG Tower Crane Installation Services


Installation/Dismantling Services

Our local CHINAMFG service team is dedicated to assisting and consulting during the erection and dismantling of tower cranes. Need more support? An on-site service engineer can be appointed to supervise your project as part of our value-added service.

Our projects

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After-sales Service: Video Technical Support, Online Support
Warranty: 1 Year
Model: Jh02 Jh07 Jh08 Jh13 Jh15 Jh17 Jh10A
Application: Tower Crane
Product Name: Slewing Reducer
Transport Package: by Standrad Export Packing


Customized Request


Can I Use Synthetic Oil in My Gearbox?

Yes, you can use synthetic oil in your gearbox, and in many cases, it can offer several advantages over conventional mineral-based oils:

  • Improved Temperature Stability: Synthetic oils typically have a higher resistance to thermal breakdown, making them suitable for gearboxes that operate at high temperatures.
  • Enhanced Lubrication: Synthetic oils often have superior lubrication properties, providing better protection against friction, wear, and component damage.
  • Extended Oil Change Intervals: Synthetic oils can often withstand longer operating periods without losing their effectiveness, reducing the frequency of oil changes and maintenance.
  • Reduced Viscosity Changes: Synthetic oils are less prone to viscosity changes at different temperatures, ensuring consistent lubrication performance in varying conditions.
  • Lower Friction and Energy Loss: The smoother molecular structure of synthetic oils can lead to reduced internal friction, potentially improving gearbox efficiency and performance.
  • Cold Weather Performance: Synthetic oils generally flow better at low temperatures, making them suitable for gearboxes operating in cold climates.
  • Protection Against Oxidation: Synthetic oils often have better resistance to oxidation, helping to prevent the formation of sludge and deposits that can impact gearbox performance.

However, before switching to synthetic oil, it’s important to consider the manufacturer’s recommendations and specifications for your specific gearbox model. Some gearboxes may have specific requirements or restrictions on the type of lubricant to use. If the manufacturer approves the use of synthetic oil, it can be a beneficial choice, but if not, sticking to the recommended oil type is crucial to ensure proper gearbox function and warranty coverage.

China Custom Slewing Gear Box for Tower Crane Transmission   sequential gearbox	China Custom Slewing Gear Box for Tower Crane Transmission   sequential gearbox
editor by CX 2024-05-14