Company profile
Beijing Zhongxing Shiqiang Ceramic Bearing Co., Ltd. is the first private joint stock high-tech enterprise specialize in manufacturing rare-earth ceramic bearing in China.
Our company founded in Beijing Zhongguancun in July 2003, our factory is located in A38# Weishanzhuang industry district, Daxing district, Beijing.China.
Rare-earth ceramic bearings take advantage of superior physical, chemical and mechanical properties of modern engineering ceramics, use national invention patent “Rare-earth ceramic bearing components and manufacturing method”(ZL92114993.X) and “Processing technic of ceramic balls”(ZL94106294.5), produced by special processing technic and have a lot of excellent performance.
Rare-earth ceramic bearings have many outstanding advantages, resistant to strong acid , strong alkali, salt…other corrosion, elevated temperature, and wear. Light structure weight, high limit speed, low noise, electric insulation, stable dimension at elevated temperature, small starting torque etc.
They’re able to work under the poor lubrication condition, have longtime working life, can be widely used in aviation, aerospace, navigation, petroleum, chemical industry, machinery, automobile, locomotive, metallurgy, electronics, light textile, pump, pharmacy, food machinery, medical machinery, national defense and military technology…They’re new materials and hi-tech products have big society and economic benefit.
At present, Our company are able to produce ceramic components made of four high performance ceramic materials- Si3N4, SSiC, ZrO2, Al2O3 . We can produce 280 types which precision from P0-P4 full ceramic bearings, hybrid ceramic bearings. Minimum inner diameter is 4mm, maximum outer diameter is 180mm. The full ceramic bearings made of Si3N4, SSiC, ZrO2. Models we produce generally are as follows:
- Deep groove ball bearing: 6800-6820, 6900-6920, 16001-16018, 6000-6020, 6200-6220, 6300-6320 series
- Angular contact bearing: 7900-7920 C/AC, 7000-7020 C/AC, 7200-7220 C/AC/B, 7300-7320 C/AC/B series (C: contact angle 15 °, AC: contact angle 25 °, B: contact angle 40 °)
3. Double row self aligning ball bearing: 1200-1218, 1300-1318 series
4. Spherical surface ball bearing: UC201-UC210 series
5. Minisize ball bearing: 684-689, 694-699, 604-609, 624-629, 634-639 series
6. High precision cylindrical roller and rolling cone bearing NN3000(3180100series) NU200/30200 series
Full ceramic bearings are specially designed under different working conditions. For example, full ceramic full complement bearings, non-standard ceramic bearings etc. According to different working conditions, use retainer made of different materials, such as: PTFE, PEEK, PFA, Nylon, polyformaldehyde, brass, aero space aluminum etc.
For many years, our enterprise have formed R&D, production, process(work fixture), test and after service integrated professional team. Formulate and complete company inner quality standard 73 terms. Formed unique test methods from raw material to finished product. Gained four national patents.
We have founded ceramic powder production, isostatic forming, gas protecting sintering, bearing, product superfinishing…complete technology system. We can produce all kinds of accuracy class rare-earth ceramic bearing, ceramic roller cone, ceramic balls according to ISO, GB standards or user requirements.
? Except ceramic bearings, we have successfully developed four structure ceramic mechanical parts, ceramic nozzle, ceramic mechanical seals, measuring implement, set block, ceramic bearing standard component, ceramic wire-drawing die, ceramic battery mould, ceramic activity fulcrum, ceramic bulletproof piece, ceramic valve, ceramic plunger…40 new products made of Si3N4, SSiC, ZrO2, Al2O3. We also successfully developed full sealed ceramic bearing and and gained the national patent.
? Si3N4 main performance and typical application
? Main performance:
? High strength in a wide using temperature range
? High fracture toughness
? Abrasion resistance, shock resistance, wear resistance
? Good thermal shock resistance
? Resistance to chemical attack
? Typical application
? Antifriction bearing balls and cylindrical roller, cutting tools
? Engine moving parts, valve, turbocharger rotor
? Engine wear-resisting parts, cam follower, tappet rod
? Turbine blade
? Metal tube forming mould and compression roller
? Precision main shaft and drive shaft in high wear-resisting condition
? Welding positioner
? SSiC main performance and typical application
? Main performance
? Low density
? High strength
? Low coefficient of thermal expansion
? High thermal coefficient
? High hardness
? High elasticity modulus
? Good thermal shock resistance
? Skyhigh chemical inertness
? Typical application
? Fixed and moved turbine motor component
? Vacuum chamber ceramic panel
? Seal ring and bearing
? Ball valve component
? Thermal current pipeline
? Heat exchanger
? Semiconductor processing equipment
? ZrO2 main performance and typical application
? Main performance
? Using temperature can be reached to 2400℃
? High density
? Low thermal conductivity coefficient
? Chemical inertness
? Molten metal corrosion resistance
? Ionic conductivity
? Abrasion resistance
? Higher fracture toughness
? High hardness
? Typical application
? High density ball and milling medium
? High precision ball valve and base
? Metal tube forming roller and guider
? Ceramic yarn and thread guide
? Metal heat extrusion tool
? Deep hole valve and base
? Al2O3 main performance and typical application
? Main performance
? High wear resistance
? Very excellent dielectricity property in DC to GHZ high frequency range
? In high temperature, strong acid and strong alkali, corrosion resistance
? Good heat conductivity coefficient
? Excellent size and shape stability
? Higher strength and hardness
? Al2O3 of degree of purity from 94% to 99.5% are very easy to form metal composition, can be used in high temperature field
TYPICAL CASE
? Gas laser
? Core box panel
? Seal ring
? High temperature electrical insulator
? High pressure electrical insulator
? Brasque pipe
? Ceramic yam and thread guide
