Tower Crane Slewing Gearbox JJH07A – Slewing Reducer with Pinion
Product Overview
TYB Infra Solutions offers Tower Crane Slewing Gearbox / Slewing Reducer JJH07A with Pinion, suitable for tower crane maintenance, replacement and refurbishment requirements.
The slewing gearbox is an important part of the tower crane’s slewing mechanism. It works with the slewing motor and pinion to provide controlled rotation of the crane’s upper structure.
The JJH07A unit shown is supplied as a complete slewing reducer assembly with output pinion, making it suitable for replacement applications where the existing slewing gearbox requires replacement, subject to compatibility.
💰 Price: ₹2,20,000/-
GST & freight extra, as applicable.
Tower Crane Slewing Gearbox
A tower crane must be able to rotate its upper structure smoothly and reliably during operation. The slewing gearbox, also commonly called a slewing reducer or slew drive gearbox, forms a key part of this mechanism.
The basic power transmission arrangement is:
Slewing Motor → Slewing Gearbox → Pinion → Slewing Ring → Crane Rotation
The gearbox reduces the motor’s rotational speed and transmits the required mechanical output through the pinion to the slewing ring.
JJH07A Slewing Reducer
This JJH07A Slewing Reducer is intended for tower crane slewing applications and features an integrated output pinion arrangement.
Product Features
- Model: JJH07A
- Product: Slewing Gearbox / Slewing Reducer
- Application: Tower Crane
- Type: Slewing mechanism gearbox
- Output: Pinion gear
- Supply: Complete gearbox assembly with pinion
- Application: Replacement, maintenance and refurbishment
- Price: ₹2,20,000/-
- GST: Extra, as applicable
- Freight: Extra, as applicable
Important: Gear ratio, output torque, input speed, mounting dimensions and motor compatibility are not specified in the supplied quotation. These should be confirmed against the customer’s existing crane and gearbox before ordering.
Why the Slewing Gearbox Is Important
The slewing system is responsible for rotating the tower crane’s upper structure. During crane operation, the slewing mechanism can experience repeated starting, stopping, reversing and dynamic loading.
A properly matched gearbox helps provide:
- Controlled slewing movement
- Smooth power transmission
- Reliable pinion engagement
- Proper reduction of motor speed
- Efficient transmission of rotational power
The gearbox and pinion must be correctly matched with the crane’s slewing ring, motor and control system.
Common Reasons for Slewing Gearbox Replacement
A slewing gearbox may need replacement because of:
1. Gear Wear
Continuous operation can eventually cause wear to internal gears and transmission components.
2. Bearing Damage
Worn or damaged bearings can result in vibration, noise and abnormal operation.
3. Oil Leakage
Damaged seals or housing issues can cause lubricant leakage.
4. Excessive Backlash
Excessive play between the gearbox output and slewing system can affect crane rotation.
5. Abnormal Noise
Grinding, knocking or unusual mechanical sounds can indicate internal gearbox problems.
6. Pinion Wear
The output pinion works directly with the slewing ring gear. Damaged or worn teeth can affect the slewing mechanism.
Replacement Slewing Gearbox for Tower Cranes
The JJH07A can be considered for tower crane replacement requirements where the original gearbox has become damaged, worn or unavailable.
It may be useful for:
- Tower crane breakdown maintenance
- Preventive maintenance
- Tower crane refurbishment
- Used tower crane restoration
- Replacement of damaged slewing reducers
- Tower crane spare-parts inventory
- Construction equipment repair projects
Compatibility must be confirmed before purchase.
How to Check Compatibility
Before ordering a replacement slewing gearbox, customers should provide as much of the following information as possible:
| Required Information | Details |
|---|---|
| Tower Crane Manufacturer | Make / Brand |
| Tower Crane Model | Model number |
| Existing Gearbox | Model / Part Number |
| Nameplate | Clear photograph |
| Gearbox Photos | Front, side & bottom |
| Pinion | Tooth / dimensional details |
| Mounting | Hole pattern & dimensions |
| Motor | Existing slewing motor details |
| Quantity | Required quantity |
| Delivery Location | City / State |
This information allows the replacement unit to be checked against the existing tower crane configuration.
Complete Slewing Gearbox with Pinion
The product shown is not simply a loose gear or pinion. It is a slewing reducer/gearbox assembly with an output pinion.
This makes it particularly useful where the complete existing slewing drive assembly needs to be replaced rather than repairing individual internal components.
Product Specification
| Specification | Details |
|---|---|
| Product Name | Tower Crane Slewing Gearbox |
| Alternative Name | Slewing Reducer / Slewing Drive |
| Model | JJH07A |
| Application | Tower Crane |
| Mechanism | Slewing System |
| Output | Pinion |
| Assembly | Complete Gearbox with Pinion |
| Manufacturer / Supplier | Chengdu Jihe Zhicheng Intelligent Equipment Co., Ltd. |
| Country of Origin | China |
| Selling Price | ₹2,20,000/- |
| GST | Extra, as applicable |
| Freight | Extra, as applicable |
The supplier’s PI identifies the item as a JJH07A Slewing Reducer, quantity 1 unit, with a supplier price of USD 1,045.
Benefits of Buying from TYB Infra Solutions
TYB Infra Solutions provides sourcing and supply support for tower crane components and spare parts.
We can assist customers looking for:
- Tower Crane Slewing Gearboxes
- Slewing Reducers
- Slewing Motors
- Slewing Pinions
- Tower Crane Gearboxes
- Tower Crane Electrical Parts
- Tower Crane Mechanical Parts
- Tower Crane Spare Parts
- Replacement Components
- Refurbishment Parts
Our objective is to help customers source the correct replacement component based on the existing crane and part identification.
Frequently Asked Questions
What is a tower crane slewing gearbox?
It is the gearbox used in the tower crane’s slewing mechanism to transmit power from the slewing motor to the slewing ring through the pinion.
What is the difference between a slewing gearbox and slewing reducer?
In tower crane applications, the terms are commonly used interchangeably. A slewing reducer is essentially the reduction gearbox used in the slewing drive system.
Does this unit include the pinion?
Yes. The offered JJH07A unit is supplied as the gearbox assembly with an output pinion, as shown in the product photograph.
What is the price?
₹2,20,000/- + GST, with freight extra as applicable.
Can I install it on any tower crane?
No. Compatibility must be checked. Tower cranes use different gearbox models, mounting arrangements, ratios, motors and pinion/slewing-ring configurations.
What should I send for compatibility checking?
Send your tower crane make, model, existing gearbox nameplate and clear photographs of the existing gearbox and pinion.
Buy Tower Crane Slewing Gearbox – JJH07A
Looking for a replacement slewing gearbox for your tower crane?
JJH07A Tower Crane Slewing Reducer with Pinion
₹2,20,000/- + GST
📞 Contact TYB Infra Solutions for availability and compatibility confirmation.
Send us your tower crane model + gearbox photo/nameplate and our team can check the replacement requirement.