Specifications

NTA series needle thrust bearing NTA-512
1.Support high loads
2.low friction
3.Gcr15
4.ISO:9001:2000

needle roller thrust bearings are fitted with a form-stable cage to reliably guide and retain a large number of needle rollers.The diameter deviations of the rollers within one assembly are within 2 µm, enabling these bearings to accommodate heavy axial loads and shock loads.These bearings provide a high degree of stiffness within a minimum axial space.In applications where the faces of adjacent machine components can serve as raceways,needle roller thrust bearings will take up no more space than a conventional thrust washer.They can accommodate axial loads acting in one direction only.  needle roller thrust bearings in two designs:

• needle roller and cage thrust assemblies, AXK series
  
• needle roller thrust bearings with a centring spigot, AXW series

For applications where adjacent components cannot serve as raceways,the assemblies can also be combined with washers of various designs.

Needle roller bearings are a bearing that is classified as either radial or thrust depending on the direction of the load being supported. Needle roller bearings include bearings whose rollers slightly exceed the size range of needle rollers as stipulated by ISO.Needle roller bearings include drawn cup and solid radial bearings,as well as application-specific cam followers,and roller followers.Thrust bearings include thrust needle bearings.

When high axial load capacities are needed and envelope space is minimal, needle thrust bearings are an option.These bearings consist of a stamped or machined cage and rollers.The cage retaining the rollers is paired with thrust washers that act as raceways.Thrust bearings can be used without thrust washers when the faces of adjacent machine components can serve as raceways,allowing the machine to be even more compact.These bearings provide a high degree of stiffness and are most suitable where high accuracy is required at high speeds and under fluctuating heavy loads,such as machine tools and high-pressure pumps.

Needle roller and cage thrust assemblies are complements of small diameter needle rollers arranged in a spoke-like configuration.Needle rollers are equally spaced by means of a cage whose web section separates the rollers and provides guidance to keep them tracking in an orbital path.The purpose of these assemblies is to transmit thrust loads between two relatively rotating objects while greatly reducing friction.

Needle roller and cage thrust assemblies also can be unitized with lipped washers which serve as raceway surfaces for the needle rollers.Washers can be supplied separately or can be mechanically unitized to the needle roller thrust assemblies for easy handling.

Size range: 6 mm to 140mm (0.2362 in. to 5.5118 in.)

Specifications of NTA series needle thrust bearing NTA-512

 

Shaft Diameter(mm)	7.92
Bearing Designation	NTA-512
Mass(g)	2
Dc1(mm)	7.92
Dc(mm)	19.5
Dw(mm)	1.984
Cr Dynamic(N)	4600
Cor Static(N)	4100
Oil(rpm)	7000

 

  Features of NTA series needle thrust bearing NTA-512

• Dimensions for bore and O.D. of thrust assemblies and washers are nominal.
• Thrust washers burnished at least one quarter of bore area (remainder is rough breakaway finish).
• O.D. finish of washers will be as blanked.
• Thinner washers may be out of flat due to distortion in hardening in the free state (expected to flatten out under load).

 Applications

• Automotive automatic and manual transmissions
• Automotive accessories (compressors, steering gears, etc.)
• Agricultural equipment
• Construction equipment

 Expanded Options

• One-way fool-proof assembly features
• Anti-rotation locking features
• Lubrication flow enhancements
• Model numbers of thrust needle roller bearing

• Part Number	d Bore	D Outside Dia.	S Width	Maximum Speed (rpm)	Load Rating N		Weight g
  				Oil	Dynamic	Static
  AXK0619TN*	6	19	2	16000	6740	15400	1
  AXK0821TN*	8	21	2	15000	7750	19000	2
  AXK1024	10	24	2	14000	9150	24500	3
  AXK1226	12	26	2	16000	9860	28600	3
  AXK1528	15	28	2	11000	11200	35500	4
  AXK1730	17	30	2	10000	11800	38600	4
  AXK2035	20	35	2	8500	12900	45600	5
  AXK2542	25	42	2	7000	13800	57800	7
  AXK3047	30	47	2	6000	15600	69500	8
  AXK3552	35	52	2	5500	16900	80100	10
  AXK4060	40	60	3	4700	27500	113500	16
  AXK4565	45	65	3	4300	29050	127600	18
  AXK5070	50	70	3	3900	31500	13800	20
  AXK5578	55	78	3	3500	37400	185000	28
  AXK6085	60	85	3	3200	43900	232500	33
  AXK6590	65	90	3	3000	45800	254600	35
  AXK7095	70	95	4	2900	53600	254400	60
  AXK75100	75	100	4	2700	54500	264600	61
  AXK80105	80	105	4	2600	55600	278500	63
  AXK85110	85	110	4	2400	57500	28800	67
  AXK90120	90	120	4	2300	72500	401000	86
  AXK100135	100	135	4	2000	90500	559500	104