Quick Details


Slewing Bearing

Brand Name:


Bore Size:

100 – 145 mm

Outside Diameter:

200 – 312 mm

Model Number:



Four Point Contact

Gear Options:

External Gear Only

Seals Type:

Rubber Sealed

Place of Origin:

Zhejiang, China

Product Number:

EGSBM312 145 50SSE (9E-1B20-0223-0287)

Product Name:

PSL 9E-1B20-0223-0287 High Quality External Gear Slewing Bearing



Bearing type:

Four Point Contact Ball Slewing Bearing



Core Hardness:


Raceway Hardness:





Design, Manufacturing, Customized

Packaging & Delivery

Selling Units:
Single item
Single volume:
128500 cm
Single gross weight:
190.000 kg
Package Type:
Before warpping, every slewing bearing should be painted rust-preventive lubricant.
1st: plastic film
2nd: kraft paper
3rd: blue blet
4th: International Standard Wooden Case for by Sea or by Air
Lead Time
Quantity(Pieces) 1 – 10 >10
Est. Time(days) 50 To be negotiated

Online Customization

Product Description

PSL 9E-1B20-0223-0287 High Quality External Gear Slewing Bearing Turntable

Slewing bearings are large-sized bearings which can accommodate a combined load, i.e., radial loads and tilting moment. They are usually provided with holes for fixing bolts; internal, external or no gear; and lubrication holes and seals, which allow a compact and economical arrangement. In addition, they often enable the elimination of many components necessary in the classical bearing arrangement.

Slewing Bearing Details As Below:

Product Name

PSL 9E-1B20-0223-0287 High Quality External Gear Slewing Bearing Turntable

Model Number

EGSBM312 145 50SSE

Reference Number


Gear Option

External Geared


for Cranes

Seal Type

Rubber Sealed


Single Row Ball Slewing Bearing



Outer diameter:

312 mm (12.28")

Inner diameter:

145 mm (5.71")


50 mm (2")

Axial play:

0.00 mm~0.05 mm

Radial play:

0.00 mm~0.05 mm

Core hardness:

215-255 HB Quenching and Tempering

Raceway Hardness:

55 ~ 60 HRC Quenching

Raceway Hardness Effective Depth

≥2.5 mm


GB42CrMo (DIN42CrMo4/BS708A42/AISI4140)


EN 10204 2.2; EN 10204 3.1.B ; EN10204 3.1.C

Heat treatment

Raceway induction quenching

Operating Temperature

-40°C to +50°C


EP2 lubricating lithium grease


17.5 KGS

Place of Origin

Luoyang, Henan, China


API Q1 Certificate (American Petroleum Institute) Quality Assured Firm
Qualified to be used in Petroleum machinery equipment.
ISO9001:2008 Certificate


OEM Service, Customized Service, Design Service

Our Company

Shenyang Leadway Machinery Equipment Co., Ltd. is the subsidiary corporation of Universal Industrial Products, Inc.(UIPI)
UIPI is a slewing bearing (slewing rings) manufacturer specialized in large diameter solutions. We have our own warehouse in LA, California, we can stock for customer or delivery to door anytime according to customer’s request. In order to maintain our competitive edge, UIPI ran a sole proprietorship factory in China.

In 2017, Universal Industrial Products, Inc.(Luoyang ) has passed the API Q1 Certificate (American Petroleum Institute) Quality Assured Firm Qualified to be used in Petroleum machinery equipment. We are the first and for now the only slewing bearing manufacturer who has got API Q1 Certificate in China

UIPI insists on "Customer First, Quality First".Our goal is to use our resources to extend your company’s capabilities and provide a comprehensive solutions package for all your application.


UIPI (Luoyang) has passed the API Q1 Certification and to be the China first API Qualified manufactuer in bearing industry.

API(American Petroleum Institute) Quality Assured Firm Qualified to be used in Petroleum machinery equipment.

Production Process

1.Rough Lathing

2.Raceway Heat Treatment

3.Drilling Hole

4.Teeth Cutting

5.Teeth Heat Treatment

6.Final Turning

7.Assembling Ball and Spacer

8.Assembling seales

Packing & Shipping

1.Before packaing -coat the anti-rust oil

2. Plastic film packing

3. Kraft paper packing

4. Blue woven belt packing

5. Tape wrapping

6. Plywood pallet packing

Quality Control


Slewing bearing is widely used in construction and energy industry. UIPI manufactures large diameter ball and roller slewing bearing utilized in many applications such as :


Q:Are you trading company or manufacturer?
A: Leadway is a sales office in Shenyang, the facility is in Luoyang, both of them are attached to UIPI, the manufacturer of slewing bearings in USA and have nearly 20 years experience in bearing industry.

Q: Do you provide OEM service?
A:Yes. About 90% customers are OEM customers. A variety of products size, quality and quantity can be customized according to your requirements.



OEM Customer



4470 pcs

3920 pcs

550 pcs


6780 pcs

6107 pcs

673 pcs


7036 pcs

6558 pcs

478 pcs


8960 pcs

8540 pcs

420 pcs

Q: How long is your delivery time?
A: Production time: 45-60 days generally speaking.
Shipping time: for small order quantity 1-2 pieces and needed urgently, we suggest transport by air about 7 days; for large order quantity, we suggest transport by sea about 30 days from Shanghai port.

Q: How do you guarantee the delivery time?
We have strict production schedule to assure the delivery time, kindly check the production schedule as below:
A. Forging purchase period: 15-20 days

B. Production process:
1. Rough turning: 2-3 days
2. Raceway heat treatment: 2 days
3. Fine turning: 2 days
4. Gear cutting: 4-5 days
5. Drilling: 2-3 days
6. Final turning: 2 days
7. Assembling and Inspection: 2 days

C. Packing and delivery to Port: 3-5 days

The final delivery time is 45days production time plus shipping time.

Should you have any questions about slewing bearing, please contact us below: