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Bearings for Oil Field Equipment


  • Standards:GOST/ASTM/GB
  • Inner diameter (ID):50mm-2000mm
  • Outer diameter (OD):80mm-2200mm
  • Weight:5kg-1000kg
  • Structures:outer ring, inner ring and cage
  • Applications:Mud Pump

  • QIBR Model Selection
  • QIBR Customized Bearing
  • QIBR Process Control
  • QIBR Sort and Grade
Roller Bearing 666.75Q228/600Q228/666.75Q92984Q929/558.8Q929/660.4Q928/508Q928/660.4Q1032980H
32840 32844 22761 2761 228/666.75Q 228/600Q 228/666.75Q 92984Q 929/558.8Q 929/660.4Q 928/508Q 928/660.4Q 1032980H
Tapered Roller Bearing 3003736CA/W33 3003740CA/W33 3003760CA/W33 4053172K
D1007992 1007996 10079/530 1097980 1097988 10979/600 10979/710 10979/ 900 10979/950 2007172 7180 7188 71/500 71/560 71/600 71/630
Angular Contact Ball Bearing 57952 97860 97960 2097164 2097172 2097936K 2097948K 2097952K 37941K 37951K 37961K
Cylindrical Roller Bearing 50081/67090081889168164916818491681/50091681/60091681/7501681/80091682/8001687/5601687/6501689/5201689/620
81/500 81/670 9008188 9168164 9168184 91681/500 91681/600 91681/750 1681/800 91682/800 1687/560 1687/650 1689/520 1689/620 RY65/630 RY65/620
Thrust Roller Bearing 29426 29428 29430 29432 29434 29436 29440 29456 9019436 9019440 9019456Q 19954Q 19955Q 19742L 9549424
Needle Roller Bearing 154836Q 154942Q 254936Q 254941Q 254735Q 354935Q 354920Q

QIBR bearings for oil field equipment commonly include deep groove ball bearing, angular contact ball bearing, self-aligning roller bearing, four-row cylinder roller bearing, tapered roller bearing, thrust roller bearing and so on.

Single-row tapered roller bearing

back-to-back two-row tapered roller bearing

Face-to-face two rows tapered roller bearing

Four-row tapered roller bearing

Tapered roller bearing with snap ring at outer ring

Two-row tapered roller bearing with sealing structure

Full complement cylinder roller bearing with sealing structure at single side

Four-row cylinder roller bearing

Strengthened cylinder roller bearing

C-shape self-alignment roller bearing

CA-shape self-aligning roller bearing

Three points contact ball bearing

four points contact ball bearing

thrust needle bearing

Raw material

QIBR precision anti-friction bearings are usually made of chrome steel, which consist of about 1% carbon, 1.5% chromium and a small amount of manganese, silicon, and sometimes a small amount of molybdenum.

QIBR offers you a wide range of material options such as GCr15, 100Cr6, SKF 3, SUJ-2 etc. At the same time, some models of QIBR are available in stainless steel.

The rolling element can be ceramic ball (silicon nitride). Due to ceramic is kind of special material, the ceramic ball bearing has advantages of higher rotation speed, good self-lubricating property, and the rigidity is 15%-20% higher than the general bearing, and better high temperature resistance.

Bearing cage

The high-quality cage used by QIBR bearings ensure that the balls are evenly distributed in the bearing rings and can be rotated properly.

The cage has stamped steel wave type, stamped steel rivet type, nylon or phenolic plastic.

QIBR offers a wide range of advice and options depending on the operating conditions.


In order to prevent contaminants from entering the inside of the bearing, QIBR uses a metal dust cover or a rubber seal with a metal skeleton.

QIBR are able to choose two types as a combination seals according to your working conditions, or choose different kinds of seal materials, such as nitrile rubber BUNA, acrylic rubber HYCAR, fluoro rubber VITON.

Type of lubrication

Lubricating oil is the basic lubricant for ball bearings. Previously most of the lubricating oil was extracted from petroleum. Synthetic oils are now acceptable due to improved performance, such as two lipid synthetic oils, silicones and fluorocarbon synthetic oils. In general, lipid synthetic oils have better low temperature properties, lower volatility, and better temperature characteristics and viscosity compared than petroleum refined oils. Essentially all lubricants contain additives to inhibit chemical changes, prevent metal corrosion, and improve physical properties (antifoam, etc.).

The silicone and fluorocarbon synthetic oils that adopted by QIBR have lower volatility and wider temperature/viscosity characteristics.

Radial clearance

The radial clearance is the gap between the steel ball and the ring. QIBR is precisely tailored to customer's temperature conditions, interference fit, misalignment of the bearing's axis, required noise level and speed.

Service life and the rated load

The bearing life is the number of bearing rotations before the fatigue occurs on the ring or any rolling element (or the rotation time at a constant speed). However, the same set of bearings will not necessarily have the same life under the same conditions. In this case, the rated life is the number of rotations that 90% of the bearings in this group can reach or exceed before bearing weariness (or the rotation time at a constant speed). The service life of QIBR series bearings are 10%-20% longer than other bearings of the same model, through strict production process, high standard material selection, precision control.

The adopted steel balls

The steel balls in the deep groove ball bearings used by QIBR are mainly designed according to the load requirements of the bearing. The bearing ball sizes of different models are different, generally the value of rib coefficient Kd (ditch depth) range 0.35-0.40. , related to bearing diameter, such as 6000 series Kd = 0.35, 6400 series Kd = 0.40; 6200 and 6300 series, d ≤ 25mm take Kd = 0.35, d > 25mm take Kd = 0.40. Groove depth = Kd × steel ball diameter.

Bearing steel ball material comparison table
GB (China) Gcr15 GCr15SiMn
ASTM/AISI (USA) 52100 *
ГОСТ(Russia) ШX15 ШX15CГ
BS (UK) 534A99 *
JIS (Japan) SUJ2 SUJ3
NF (France) 100C6 100CrMn6
VDEh (Germany) 100Cr6 (1.3505) 1.352
Grade of rollers G3, G5, G10, G16, G20, G24, G28, G40, G60, G100, G200
Bearing Standard
Bearing Precision Grade
GOST Grade 0 Grade 6 Grade 5 Grade 4 Grade 2
ISO P0 P6 P5 P4 P2

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