NSK NTN Full Exchangeable High Speed 21312 22310 22311 22312 22334 22207 Spherical Roller Bearings

• Rolling Body：Roller Bearings
• The Number of Rows：Double
• Outer Dimension：Large (200-430mm)
• Material：Chrome Steel,Carbon Steel
• Spherical：Aligning Bearings
• Load Direction：Thrust Bearing

=== Base Info ===

• Model NO.：21312
• Separated：Separated
• Transport Package：Export Wooden Box
• Specification：21312
• Trademark：ds
• Origin：China
• HS Code：8482101000
• Production Capacity：20000 PCS, Year

=== Description ===
40.83. Sizes of Various Model Spherical Roller Bearings

4. More details


5. Overview of Company

Dezhou Rundong Petroleum Machinery Co., Ltd is a professional company with 18 years history in manufacturing of petroleum machinery products. Our company has an area of 17500 square meters, 12 technical personels, 18 quality inspection personels, 126 workers and 9 patents. Annual output value is up to USD $14 million. After comparing with foreign famous brand products during testing on offshore of COSL and various oilfields , some products enjoy the same quality level with them both in processing technic and service life. Our company has made excellent contribution in pushing Chinese petroleum machinery industry forward.

6. Our certificates & patents
7. Pacakge of our products


8. Customers' visiting shows

9. After-sales service(on-well service)
10. Transportation

11. FAQ
Q1: Are you manufacture?
A1: Yes, we are. We have been in drilling industry for 20 years and some of our products has enjoyed high reputation already, such as drilling tools, mud pump parts etc. Meanwhile, we trade other accessories to save customers' energy and shipping cost.

Q2: How to believe that our products have high quality?

A2: We are first-choice supplier of COSL, SINOPEC, CNPC since we established our company. Our products have been tested compared with some foreign famous brand on on-shore and off-shore drilling projects many times. Our products show their high-cost-performance always.

Q3: How can I choose the most suitable products ?

A3: Please let us know your needed products name and specifications. Our professional technical department will suggest the most suitable products to you according to your fact demands.

Q4: Could you supply samples?
A4: Yes, we could. We are glad to supply samples, but with sample fees. 

Q5: Whether you can manufacture strange kind of products, even the model isn't clear ?
A5: Yes, we could. If you can provide the drawings, we can manufacture as per your drawings. If you don't have drawings, the samples are workable. After receiving your samples, we can measure and make a drawing, then manufacture as per the drawing.

Q6: What is your trade terms?
A6: EXW, FOB, CFR and CIF etc. all acceptable.

Q7: What's the Payment Terms ?
A7: 30% T/T after signing the contract and 70% balance before delivery.

Q8: What's the delivery time?
A8: For stocks in available, it could be shipped out within 3 days after receiving the prepayment. For products need to be produced, usually 35 working days.

Q9: What's the warranty time?
A9: Normally, it is 12 months after you receiving our products.