July 19, 2013 in Wuxi GCr15 bearing steel price list:

July 19, 2013 in Wuxi GCr15 Cylindrical roller bearing steel price list
Steel grade State Specification Origin Price Change Remarks
GCr15 bearing steel casting Φ30-75 Xingcheng Special 5200 - Out of Stock
GCr15 bearing steel casting, annealing Φ20-80 Xinyegang 5200 ~ 5250 - Sold out; promissory Price
GCr15 bearing steel molding, annealing Φ90-110 Xinyegang 7900 - Promissory Price
GCr15 bearing steel casting Φ28-70 Xinyegang 4450 - goods less; promissory Price
GCr15 bearing steel tin casting Φ50-70 Valin Steel 4350 - goods less; promissory Price
Bearing steel GCr15 annealed tin Φ50-70 Valin Steel 5200 ~ 5250 - acceptance rates; Out of Stock
GCr15 bearing steel casting Φ45-90 Huaigang 4500 - Out of Stock
GCr15 bearing steel casting Φ16-40 Dragons 4500 - goods less; acceptance rates Bearing query
GCr15 bearing steel casting Φ30-75 North over steel 4650 - goods less; promissory Price
GCr15 bearing steel molding, annealing Φ50 Dalian Steel 8700 - prices
GCr15 bearing steel molding, annealing Φ120-210 Xining Special Steel 7700 - goods less; promissory Price
GCr15 bearing steel casting, annealing Φ40-75 North over steel 5250 ~ 5300 - goods less; promissory Price
GCr15 Roller bearing steel casting Φ26-75 Baosteel Special Materials 7400 - out of stock; promissory Price
Bearing steel GCr15 steel casting Φ80-160 SU 4350 - goods less; promissory Price

Combined needle roller bearings bearing shelf

  Thrust bearings, needle Taper bearing, thrust needle Roller bearing, Bearing Co., Ltd. Changzhou Yapai combined bearing is a radial section height smallest positioning or unidirectional locating bearing, its use in transmission engineering and machine tools such as: drill spindle, fixed heart axis, drill sets, worm, CNC machine, die head spindle bearings and similar applications.
NKIA bearings - Radial needle roller bearings and angular contact ball bearings One-way combination, for axial light load.
NKIB bearings - Radial needle roller bearings and angular contact ball bearings Two-way combination, for axial light load.
NKX bearings - Radial needle roller bearings and thrust ball combination bearings for axial heavy.
NKXR bearings - Radial needle roller bearing and thrust cylindrical roller bearing combination for axial heavy.
ZARN / ZARF bearings - Needle roller and thrust cylindrical roller bearings for CNC machining centers, screw support.
NKXR15 NKXR15Z NKXR17 NKXR17Z NKXR20
NKXR20Z NKXR25 NKXR25Z NKXR30 NKXR30Z
NKXR35 KXR35Z NKXR40 NKXR40Z NKXR45
NKXR45Z NKXR50 NKXR50Z
Model Model Model Model
NKIA5901 NKIB5901 NKX10Z NKX10
NKIA5902 NKIB5902 NKX12Z NKX12
NKIA5903 NKIB5903 NKX15Z NKX15
NKIA5904 NKIB5904 NKX17Z NKX17
NKIA59/22 NKIB59/22 NKX20Z NKX20
NKIA5905 NKIB5905 NKX25Z NKX25
NKIA5906 NKIB5906 NKX30Z NKX30
NKIA5907 NKIB5907 NKX35Z NKX35
NKIA5908 NKIB5908 NKX40Z NKX40
NKIA5909 NKIB5909 NKX45Z NKX45
NKIA5910 NKIB5910 NKX50Z NKX50
NKIA5911 NKIB5911 NKX60Z NKX60
NKIA5912 NKIB5912 NKX70Z NKX70
NKIA5913 NKIB5913
NKIA5914 NKIB5914

One-way bearing design and use of the following:

1, the slope and the slope Roller bearing and roller one-way clutch drum diameter of the outer ring consisting essentially of, respectively, with slopes exposed to the inner ring and the spring force and are always in close contact with the inner and outer rings of a group of roller components. As long as one of the raceway in the direction of its movement of rotation to another factor affecting the production, from the essence of this arrangement ensures the immediate beyond the speed and ensure the immediate drive capability. Use: This one-way bearing design can fit in a variety of environments beyond, indexing, and the use of non-return. When used as a one-way clutch is used beyond the ramp-up, one-way roller clutch will be installed in this manner, is to go beyond the outer ring as a member. This is very important for high-speed beyond. Beyond the use of the inner ring, the role of the centrifugal force on the roller will cause beyond the speed is limited. When used as an anti-reverse one-way clutch inner ring rotates when using only one-way roller clutch ramp suitable for relatively low speeds. If desired speed is higher than the recommended speed, we recommend using wedge-type one-way clutch. When used as an indexing when using one-way clutch outer race has often been seen as swinging element, the inner ring is often seen from the component. Otherwise, the roller and spring inertia will lead to errors, especially in high frequency degrees. Diluted the use of lubricants and strong spring provides high-speed indexing accuracy and quality of. 2, wedge-type design of this wedge-type one-way clutch largely from the inner ring, outer ring, wedge group, wedge cage, strong spring and bearing components. Wedge to wedge between the inner and outer rings come from one raceway to another raceway passing power. The wedge has both a diagonal diameter (that is, from the wedge corner to the opposite corner of the distance) is greater than the other one. Wedging action occurs when the inner and outer rings relative rotation relatively large cross-section of the wedge to force a greater vertical position. 3, self-locking wedge angle between the inner and outer rings rely mainly on the role of the wedge and the self-locking wedge angle. The basic concepts of the wedge-way clutch coefficient of friction requirements of the wedge drive torque suddenly inner direction of a relationship, the self-locking friction value higher than the tangent of the angle value is large. If the conditions are unsafe, wedging will not occur. Self-locking wedge angle of the structure is determined, a point on the inner and outer rings, respectively, and connected with wedges. The design of the wedge have a very low initial self-locking angle to ensure the absolute beginning of the binding. With the increase in the torque, but the wedge wedge will generate a radial force deflection roller, resulting in a wedge-roll to a new location. Wedges are often designed with a self-locking can be gradually increasing angle with it from the position beyond the maximum load Stainless steel slewing bearing up to the same position. Relatively large self-locking wedge angle can reduce production costs by a radial force, so long as the elongation and Brinell hardness is permitted within the limits required a larger torque is transmitted.

How to prevent needle roller bearings rust

Needle roller Slewing bearing rust prevention methods
1, soak method: some small rust NSK Bearings by immersion in oils, oil film thickness can be controlled by anti-rust oil temperature or viscosity to achieve. Adhesion to the surface layer of rust grease approach.
2, brushing method: Brush evenly spread in the attention NSK bearing surfaces, do not produce accumulation and pay attention coated to prevent leakage.

3, the spray method: Some material not suitable for large-scale anti-rust oil coating by immersion method, generally about 0.7Mpa pressure filter with compressed air spray cleaner place. Spray application of anti-rust oil or solvent dilution thin rust oil. This method must be improved fire protection and labor protection measures

One-way bearing manufacturing

In the bearing industry, there are many products bearing the internal structure parameters are almost the same, but such products, but not the level of vibration and noise, and compared with foreign products, so that the bearing industry must be solved is how to reduce the manufacturing process early Taper bearing vibration and noise.
   Matter what kind of products, the most fundamental measure is to reduce the ultra-fine grinding process of waviness, to avoid random bump injury, there are two main measures:
1 improve the machining plane precision grinding and superfinishing process reduces error reflection of the outer end face grinding and super positioning reference during processing. Improve the positioning reference surface shape accuracy; processing passes smoothly and without a bump hurt; rough allowance form and position errors can not be too large, especially in the remaining amount is small, too large error will cause the final grinding and ultra-fine end shape accuracy has not improved to the final quality, seriously affect the processing quality and consistency.
2 lower rolling surface vibration when ultra-fine grinding, get a good surface finish shape accuracy and surface quality in order to reduce vibration lines, grinding super machine must have good vibration resistance, bed and other important structural parts with vibration absorption, ultra-fine Whetstone machine oscillating system has a good anti-vibration performance; improve grinding speed, grinding abroad commonly used outer raceway 6202 60,000 spindle, grinding speed 60m / s or more, domestic general much lower, mainly due to the spindle and the main bearing performance limitations. In high-speed grinding, grinding force is small, thin grinding deterioration is not easy to burn, and can improve the precision and efficiency, low noise ball Roller bearing great influence; spindle stiffness and movement speed characteristics of the low-noise ball bearing a great influence on the grinding vibration, the higher the stiffness, grinding speed on the grinding force change, the less sensitive to vibration grinding system smaller; improve spindle bearing support stiffness, random balancing technology to improve the grinding spindle vibration sex.

Supply needle roller and cage assemblies

Radial needle roller and cage assemblies (needle bearing) is independent of the rolling element cage two broad guide spacing, both to guide the needle accurately, but also to maintain the correct position of needle. This kind of bearing for the shaft and housing bore can serve as raceways occasions, only the shaft and housing bore raceway processed to Taper bearing dimensions and geometric precision, you can ensure minimum space high rotational precision main structure:
Structural features bearing code
K / KS single / single split
KK / KKS double row / double row split
KZK connecting rod with crank pin
KBK connecting rod with piston pin
KNL long cylindrical roller and hold assemblies
ENKE Radial needle roller and cage assemblies with a single K-type double row K. ..... ZW type, but also in the whole cage can not be installed, you can use a special mesh-type needle roller and cage assembly bearing rear add "D", namely K. ..... D, K. ..... ZWD
Pre-Code:
KBK-piston pin with needle roller and cage assemblies
KZK-crank pin with needle roller and cage assemblies
WJ-inch needle roller and cage assemblies

Supply roller bearings NUTR4090 main structure

Structural features bearing code
KR with cage suffix "X" is expressed as a cylindrical outer surface, for example: KR16 X
KR .. PP There cage with a ring
KRV full complement needle roller
KRV .. PP full complement needle roller with a ring
NUKR full complement cylindrical roller
NUKRE full complement cylindrical roller with eccentric
CR Inch with cages
CR .. UU Inch the cage with a ring
CRV ... Inch without cage
CRV ... UU Inch no cage with a ring
CRY ... V
CRY ... VUU
KRE said that with the eccentric, a cage
KRVE said tapered bearin the eccentric, full type
One, without axial guidance
Structural features bearing code
RSTO no outer wall, a cage, curved rolling surface
RSTO .. ​​X sealed, no inner cylindrical roller surface
STO no outer wall, a cage, curved rolling surface
STO .. ​​X double sealed, no inner cylindrical roller surface
RNA22 .. 2RS outer pairs of ribs, with cage, curved rolling surface
RNA22 .. 2RS X double sealed inner cylindrical rolling surface
NA22 .. 2RS outer pairs of ribs, with roll cage curved surfaces
NA22 .. 2RS X double sealed inner cylindrical rolling surface
Two, with axial guidance
Structural features bearing code
NATR the cage with curved inner surface or cylindrical roller rolling surface
NATR .. PP has a cage inner curved surface or cylindrical roller rolling surface
NATV full complement needle roller surface or a curved inner surface of the cylindrical roller
NATV .. PP full complement needle roller surface or a curved inner surface of the cylindrical roller
NUTR full complement cylindrical roller rolling with curved inner surface
NUTR .. X full complement cylindrical roller with an inner ring cylindrical roller
Type
Number
(Mm) sealed cylindrical outer CF5 CF6 CF8 CF10 CF10-1 CF12 CF12-1 CF16 CF18 CF20 CF20-1 CF24 CF24-1 CF30 CF30-1 CF30-2
Spherical outer CF5R CF6R CF8R CF10R CF10-1R CF12R CF12-1R CF16R CF18R CF20R CF20-1R CF24R CF24-1R CF30R CF30-1R CF30-2R
A sealed cylindrical outer CF
5UU CF
6UU CF
8UU CF
10UU CF
10-1UU CF
12UU CF
12-1UU CF
16UU CF
18UU CF
20UU CF
20-1UU CF
24UU CF
24-1UU CF
30UU CF
30-1UU CF
30-2UU
Spherical outer CF
5UUR CF
6UUR CF
8UUR CF
10UUR CF 10-1UUR CF
12UUR CF 12-1UUR CF
16UUR CF
18UUR CF
20UUR CF 20-1UUR CF
24UUR CF 24-1UUR CF
30UUR CF 30-1UUR CF 30-2UUR

Curve of the wheel bolts as part of the raceway is hardened. To avoid stress concentration, thick-walled outer roller surface arc-shaped out of the loop. Curve with two rollers single and double seals, without seals, with seal ring a variety of models. Grease a large space with a storage ring, providing permanent lubrication, and extended lubrication intervals. N220 or PTFE gasket material for its operating temperature ranges of -30 ° C to +100 ° C or -30 ° C to +180 ° C. Dense loading curve wheel it can withstand heavy loads, but the speed is low, and it must always be lubricated.
Supporting roller has thick-walled outer ring, take advantage of this outer ring, the wheel can roll in the raceway, and can withstand large loads. VG-bearing roller pressure roller, eccentric roller, roller rocker. Wheel diameter cylindrical or spherical. Spherical outer ring can make use of the tilt position when installing compensated.
RSTO and STO-bearing rollers
DF-Series RSTO type roller bearing without inner ring, roller bearing can be directly used as a raceway shaft quenching operation. STO-belt inner ring, with its inner and outer rings and needle roller cage assembly can be installed separately. As RSTO and STO-bearing roller ring without ribs and the end, the installation must have axial guidance, its guiding surface is at least precision lathe.

RNA22 ... 2RS, NA22 ... 2RS-bearing roller
This wheel diameter wheel with STO same series. They just slightly wider, double sealed structure makes no maintenance, use temperature range is -20 ℃ -120 ℃. Installed without inner ring RNA22 ... 2RS series of roller bearing should pay attention not to damage the seals. Outer boot needs to end.

NATR and NATR ... PP-bearing roller
NATR series of roller bearing includes an outer ring, inner ring, roller cage assembly and pressed into and fixed to the inner side of the ring. NATR ... PP series also additional sealing ring. The wheel bearing grease with a large storage space, long-term use without greasing.

NATV and NATV ... PP-bearing roller
NATV series of roller bearing roller with NATR series is basically the same, the only difference is NATV series full complement needle roller type. So it can withstand heavy loads at low speeds, but must pay attention to regular lubrication. NATV ... PP series with seal structure.

NUTR-bearing roller
NUTR series of roller bearing is double row full complement cylindrical roller bearings, the outer ring guided by the ribs. All parts are made of bearing outer ring pressed into the sealing cap to form a complete unit, the sealing cover and the thrust ring together form a highly efficient clearance seal. The wheel bearing can withstand very heavy loads, because the rolling elements with axial guidance, even at high speeds can also withstand the impact of axial loads.

Tolerance
DF-bearing roller curve wheel size, shape and rotation precision usually is P0 level. Diameter with a circular arc curve roller bearing roller diameter tolerance is 0/-0.05mm, NATR, NATV, NUTR bearing width tolerance h12, curve wheel stud diameter tolerance h7.

Adjustable Mind
Diameter cylindrical roller bearing with adjustable concentric small. At low load, it is about 3-4 ', in the medium to high load of 5-7'. With arc-shaped outer concentric bearing wheel adjustable 15-20 '. When a larger angle error, according to the size of the load there is significant edge stresses, it will reduce bearing life.

KR and KR ... PP curve roller
In KR, KR ... PP curve roller, there is a cage-guided needle roller and outer ring on the ring via a bolt axial guidance. For heavy loads and medium speed. Because there is more inside the bearing grease storage space, so lubrication intervals have been extended. KR ... PP curve roller is in contact with the seal structure. Using a temperature of -30 ℃ -100 ℃.

KR and KR ... PP curve roller
KRV and KRV ... PP curve roller KRV and KRV ... PP type curve rollers
KRV, KRV ... PP curve roller and KR, KR ... PP curve roller same structure, only that they are full complement needle roller bearings. They can withstand heavy loads and low speeds. And must always grease.

NUKR curve roller
This series curve roller is double row full complement cylindrical roller structure. Cylindrical roller bearings like the same with the outer ring axially guided by the rolling body pressed into the outer casing and the wall composed of high-level effect of the gap seal.
This curve can withstand particularly high wheel loads, as well as due to the axial roller guide can also withstand the impact of axial load.

KRE, KRE ... PP, KREV, KREV ... PP, NUKRE curve roller
All models are available with eccentric roller curve supply. The end face of the roller bolt grooves can be adjusted. The bolt face marked "HSB" Department said eccentric sleeve highest point. Grease both ends by bolts.