Railway Bearing for Freight Car RNA 6909 needle roller bearingKOYO INA RNA6909 52x68x40 mm
Needle roller bearing :
Needle Roller Bearing (needle bearing) is a cylindrical roller with roller bearings, relative to its diameter, roller both thin and long. This is called needle roller. Despite having a smaller cross-section, has a higher load bearing capacity, equipped with a thin and long needle bearing roller (roller diameter D≤5mm, L / D≥2.5, L is the length of the roller), so radial structure is compact, its diameter size and load capacity and other types of bearings, minimum diameter, especially for radial dimensions limited support structure.
|Bearing Material||Chrome Steel, Carbon Steel, Stainless Steel, Plastic, Ceramic|
|Cage Material||Steel, Brass, Nylon|
|Number of Row||Double Row|
|Precision||P0, P6, P5, P4, P2|
|Clearance||C1, C2, C0, C3, C4, C5|
|Vibration||V1, V2, V3, V4|
|Noise||Z1, Z2, Z3, Z4|
|Place of Origin||Wuxi, China(Mainland)|
|Sample||Small Quantity of Free Samples
Needle Roller Bearing Serises:
K,NK,NKI,NKS,NKIS,NA,NAO,RNA ,RNAO,HK,BK etc.
Part of the bearing specification :
Widely Used :
Processing center, blasting equipment, bending machine, ventilator, CNC lathes, drilling equipment, shears, blowers, machine tools, mining geophysical equipment, wire cutting, magnetic separation equipment, special tools, sorting sieve, EDM, grading equipment, graphite heat exchanger, shaker, evaporator, fixture, and other fields.
1).If quantity is not very big,we will send you by UPS,DHL,FEDEX,OR EMS. Tracking number will be advised after delivery,
2).If order is big,we will advise you use Air Freight or Sea Freight
3).The balance payment should be paid before delivery to you.
1). If no special request,we will use normal packing, 1 bag for each product
2).If need special packing or carding, please list them in your E-mail.We would
like to make the customer wanted packing
3).we will use tray to protect products ,in order to avoid any damage in the delivery
4). OEM service is available