Products

Slew Drive

Slewing drives with electric motors find applications in various industries where controlled rotational movement is crucial for the operation of equipment.

Series SE PE Slew Drive

Experience enclosed geared rotary drive perfection, featuring low rotational speed and customizable positioning accuracy, tailored for environments susceptible to dust and debris challenges. Ask engineers for details.

Unit of Torque

Model	Output Torque	Tilting Moment Torque	Holding Torque	Gear Ratio	Tracking Precision	Weight
SE3	400 N.m	1100 N.m	2000 N.m	62:1	0.2°	12kg
SE5	600 N.m	1800 N.m	5000 N.m	62:1	0.2°	12kg
SE7	1000 N.m	13500 N.m	10400 N.m	73:1	0.2°	21kg
SE9	6.5 KN.m	33.9 KN.m	38.7 KN.m	61:1	0.17°	49kg
SE12	7.5 KN.m	54.3 KN.m	43 KN.m	78:1	0.17°	61kg
SE14	8 KN.m	67.8 KN.m	48 KN.m	85:1	0.17°	64kg
SE17	10 KN.m	135.6 KN.m	72.3 KN.m	102:1	0.15°	105kg
SE21	15 KN.m	203 KN.m	105.8 KN.m	125:1	0.15°	149kg
SE25	18 KN.m	271 KN.m	158.3 KN.m	150:1	0.15°	204kg

Model	Output Torque	Tilting Moment Torque	Holding Torque	Gear Ratio	Tracking Precision	Weight
SE3	295 lbf.ft	811 lbf.ft	1476 lbf.ft	62:1	0.2°	12kg
SE5	443 lbf.ft	1328 lbf.ft	3688 lbf.ft	62:1	0.2°	12kg
SE7	738 lbf.ft	9957 lbf.ft	7671 lbf.ft	73:1	0.2°	21kg
SE9	4794 lbf.ft	25×10³ lbf.ft	29×10³ lbf.ft	61:1	0.17°	49kg
SE12	5532 lbf.ft	40×10³ lbf.ft	32×10³ lbf.ft	78:1	0.17°	61kg
SE14	5900 lbf.ft	50×10³ lbf.ft	35×10³ lbf.ft	85:1	0.17°	64kg
SE17	7400 lbf.ft	100×10³ lbf.ft	53×10³ lbf.ft	102:1	0.15°	105kg
SE21	1100 lbf.ft	150×10³ lbf.ft	78×10³ lbf.ft	125:1	0.15°	149kg
SE25	13300 lbf.ft	200×10³ lbf.ft	117×10³ lbf.ft	150:1	0.15°	204kg

Bearing

A bearing is a critical mechanical component designed to support and reduce friction between rotating parts. It typically consists of an outer ring, an inner ring, and rolling elements such as balls, rollers, or sliders. The movement of these rolling elements between the outer and inner rings minimizes friction, allowing smooth rotation of the shaft. Bearings come in various types, including ball bearings and roller bearings, catering to diverse industrial and mechanical applications, providing reliable support and efficient shaft rotation.

Slewing Bearing

A slewing bearing is a specialized bearing system designed for industrial and construction applications, supporting and enabling smooth rotation of equipment. Its structure consists of inner and outer race rings, applicable in various fields such as cranes and solar tracking systems. Constructed with high-strength alloy steel, it ensures reliability under heavy loads. Capable of handling axial, radial, and torque loads, the slewing bearing delivers precise rotational accuracy and stability, meeting the demands for precision positioning in diverse applications.

Single row ball

Single row ball slewing bearing usually consists of outer ring, inner ring, balls and cage.

Cross roller

Crossed roller slewing bearing is composed of two sets of rollers arranged crosswise.

Three rows of roller

The three-row roller slewing bearing is composed of three rows of rollers arranged crosswise.

Single-Row Ball Slewing Bearing (Normal Structure)

Versatility and Affordability: An all-around performer, balancing functionality with cost-effectiveness.
Easy Integration: Simple design ensures quick and hassle-free installation.

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Frequently Asked Questions

Expert Insights and Reliable Solutions to Your Most Common Questions.

Types of Slewing Bearings

Four-Point Contact Single Row Ball
Crossed Roller
Double Row Ball
Double Row
Eccentric Ball
Three-Row Roller

Differences in Application

Single Row Ball, Crossed Roller, and Three-Row Roller Slewing Bearings

Ball Bearings: Suitable for high-speed applications
Roller Bearings: Suitable for heavy load, low-speed applications
Crossed Rollers: Suitable for high-precision rotation

How to Select a Slewing Bearing

Submit your drawing → Get a Quote
Or contact our engineer for table selection guidance

Materials

Slewing Bearings: C45N, 50Mn, C48, 42CrMo, etc.
Small Gears: 40Cr, 18CrMnTi, 20CrMnTi, 29CrMnTi, 17CrNiMo6, etc.
Other Products: Customized according to client requirements

Size Range

Slewing bearings: 10 mm – 10,000 mm

Recommended RPM

20 – 80 RPM
Exceeding recommended speed may cause reduced service life, overheating, or premature wear

Key Methods to Extend Bearing Life

1. Use high-strength, wear-resistant materials (e.g., 42CrMo4)
2. Ensure precise installation with flat mounting surface and correct preloading
3. Regular lubrication
4. Avoid overloading
5. Reduce operating time and speed
6. Apply gear hardening where applicable

Port Cranes / Ship Cranes – Usage Notes

Ensure that the slewing bearing soft strap positions are avoided within the swing range of the boom

Warranty & Spare Parts

Warranty: 1 year from the date of delivery
Spare parts replacement: Lifetime free for customers

Lead Time

In-stock items: Within 3 days
Standard products: 1–2 weeks
Custom products: Depends on size and precision, typically no more than 40 days
Urgent orders: Fast-track production is available

Shipping Methods

By sea, by air, DHL, TNT, FedEx, etc.

OEM Capability

Yes, OEM services are available

Minimum Order Quantity (MOQ)

1 piece

Causes of Abnormal Noise