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355g Railway Bearing Freight Car RNA 6909 KOYO INA 52x68x40 mm

355g Railway Bearing Freight Car RNA 6909 KOYO INA 52x68x40 mm
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Stock: Enough Stock
Bearing Type: Needle Roller Bearing
Material: Bearing Steel
Vibration: V1,V2,V3,V4
Weight: 355g
Size: 52x68x40 Mm
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Basic Infomation
Place of Origin: China or Japan
Brand Name: IKO/ NSK
Certification: ISO 9001 2000
Model Number: RNA 6909
Payment & Shipping Terms
Packaging Details: Single packing + standard export packing
Delivery Time: 5 working days
Payment Terms: T/T, Western Union
Supply Ability: 10000PCS/Month
Product Description

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.

Type Roller
Structure Needle
Model Number RNA6909
Bearing Material Chrome Steel, Carbon Steel, Stainless Steel, Plastic, Ceramic
Cage Material Steel, Brass, Nylon
Number of Row Double Row
Seals Type Open
Lubrication Grease, Oil
Precision P0, P6, P5, P4, P2
Clearance C1, C2, C0, C3, C4, C5
Vibration V1, V2, V3, V4
Noise Z1, Z2, Z3, Z4
Service OEM
Place of Origin Wuxi, China(Mainland)
Sample Small Quantity of Free Samples


355g Railway Bearing Freight Car RNA 6909 KOYO INA 52x68x40 mm 0



Needle Roller Bearing Serises:




355g Railway Bearing Freight Car RNA 6909 KOYO INA 52x68x40 mm 1



Part of the bearing specification :

  Fw D C
Bearing No. mm mm mm
RNA69/32-ZW 40 52 36
RNA6907-ZW 42 55 36
RNA6908-ZW 48 62 40
RNA6909-ZW 52 68 40
RNA6910-ZW 58 72 40
RNA6911-ZW 63 80 45
RNA6912-ZW 68 85 45
RNA6913-ZW 72 90 45
RNA6914-ZW 80 100 54
RNA6915-ZW 85 105 54
RNA6916-ZW 90 110 54
RNA6917-ZW 100 120 63
RNA6918-ZW 105 125 63
RNA6919-ZW 110 130 63


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.


Delivery :


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


355g Railway Bearing Freight Car RNA 6909 KOYO INA 52x68x40 mm 2

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Tel : 0086-13382239277
Fax : 86-510-82615331
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