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Thirty years of making bearings

Shandong Chengli Machinery Technology Co., Ltd. — a bearing factory with its own brand, its own machines and its own quality system.

Who we are

The factory behind SWTG

Chengli Machinery was established in 1995 and has spent three decades doing one thing: manufacturing bearings. Today we produce and supply more than 10,000 bearing designations under our own brands, SWTG and Chengli.

Because we manufacture in-house, we control the three things industrial buyers care about most — consistent quality, honest pricing and delivery we can commit to. There is no trading layer between our workshop and your warehouse.

Our range covers large industrial bearings, precision mechanical bearings and custom-engineered designs, serving manufacturing, energy, agriculture and transportation customers.

Visit or contact the factory

Chengli bearing production workshop — CNC grinding and assembly lines

Production workshop, Shandong

By the numbers

What you can hold us to

1995Year established

30+Years in bearing manufacturing

10,000+Bearing designations

24 hDispatch on stock models

Quality & compliance

Certificates and test reports

Documentation is available on request for the relevant product families. Ask for copies before you order.

Document	Reference no.	Covers
CE Certificate	DLR-250804029C	Slewing bearings
RoHS Certificate	DL-240930050RC	Designated bearing series
CTGS Test Report	Deep groove ball bearings	6000 / 6200 / 6300 sealed series
MTL Certification	MTL24120500321R01	Deep groove ball bearing range
DL Certificate	DLR-250318005C	Chain product line

Transparency note: Chengli manufactures its own SWTG and Chengli brand bearings. We are not an authorised agent of SKF, NSK, NTN, FAG or Timken; where a customer requires those brands we source and supply them, and all brand names remain the property of their respective owners.

How we work

Four things our customers rely on

Experience

Three decades focused on bearings, with application technicians who can specify the right product for your duty cycle.

Inventory

Common designations held in quantity in our warehouse, so special models and large quantities can be met quickly.

Flexibility

Flexible supply quantities, custom packaging in different box sizes and labelling to your requirement.

After-sales

Fast response and fast resolution — and free technical guidance from our engineering team when you need it.

Come and see the workshop

Factory visits are welcome — or start with a trial order and judge the bearing, not the brochure.

Arrange a visit