Explore The Black Technology in Bearings S608 2rs Bearings

Taking 608 2rsh as an example, it is a bearing for low-temperature working conditions. This bearing is a new material we have recently developed. This special stainless steel belongs to high nitrogen steel,
What are the benefits of high nitrogen steel? Its corrosion resistance is very good, and its neutral salt spray test can withstand more than 196 hours. At the same time, its low temperature resistance is also very good. This bearing is mainly used in LNG submersible pumps, used in an environment of minus 163 degrees Celsius. At the same time, the steel ball matched with this bearing is also made of silicon nitride material, and the bearing cage is made of PCTFE made of polytetrafluoroethylene. This material has good lubrication performance, and the overall bearing design structure and material can meet its long-term use in low-temperature conditions.

608 rs bearing is a stainless steel deep groove ball bearing we use for submersible pumps, specializing in low temperature, corrosion resistance, and high quality. The core is 8 × 22 × 7mm, with a U-shaped outer ring and dual waterproof seals, specially customized for low temperature conditions.

Model: 608 2rs ball bearings stainless steel deep groove ball bearings (double sealing rings)

Dimensions: Inner diameter 8mm, outer diameter 22mm, width 7mm

Accuracy: Conventional P0/P6, customizable P5/P4; Clearance MC3~MC5 (low temperature adaptation)

Rated load: dynamic load of about 2.8kN, static load of about 1.1kN (stainless steel)

Speed: Oil free low temperature of about 40000 rpm, suitable for submersible pump operating conditions

Material combination (suitable for low temperature -196 ℃)
Ring: 440C (G95Cr18)/Crnidur30 (high nitrogen stainless steel, low temperature resistance, intergranular corrosion resistance)

Rolling element: 440C stainless steel/silicon nitride Si3N4 (Si3N4 has a low coefficient of thermal expansion, insulation, and is non-magnetic)

Holder: PEEK (resistant to low temperature -269 ℃, self-lubricating, resistant to medium swelling)

Sealing ring: FKM/FFKM (low temperature resistance -60 ℃~+200 ℃, suitable for LNG and other media)

Design reinforcement
Sealing: 608 2rs c3 adopts dual UU lip seal+O-ring anti creep, IP65 waterproof and anti impurity

Lubrication: Suitable for medium self-lubricating (such as LNG), without the need for additional grease, to avoid low-temperature failure

Clearance: Low temperature clearance (MC3/MC4), compensating for cold shrinkage and preventing jamming

Surface: Electrolytic polishing/passivation to reduce friction and corrosion risks

key performance
Temperature resistance: -196 ℃~+150 ℃ (compatible with LNG/liquid nitrogen submersible pumps)

Lifespan: Low friction+corrosion-resistant material, extends maintenance cycle, reduces downtime losses

Reliable: Anti impurity, anti medium corrosion, suitable for complex working conditions

Applicable: LNG/liquid nitrogen submersible pump, low-temperature circulation pump, cryogenic equipment, etc
Selection key points: specify temperature (such as -196 ℃), medium (LNG/liquid nitrogen/containing impurities), speed/load, and sealing grade
Customization items: material upgrade (Si3N4 ball), clearance customization, sealing reinforcement, cleanliness control (meeting food/medical grade)

Compared to ordinary 608 2rs bearing specifications, the 608 roller bearing is designed with stainless steel material, low-temperature retaining frame, dedicated seal, and pre clearance to meet the low-temperature, medium lubrication, and high-quality requirements of submersible pumps. It is an ideal choice for low-temperature submersible pump rotation.

If you need to customize more models of bearings, please contact us. Our product features include low temperature resistance, high temperature resistance, corrosion resistance, high speed, and low noise