A needle roller bearing is a bearing which uses small cylindrical rollers.

They are used to reduce friction of a rotating surface.
Needle bearings have a large surface area that is in contact with the bearing outer surfaces compared to ball bearings. Additionally there is less added clearance (difference between the diameter of the shaft and the diameter of the bearing) so they are much more compact.

The typical structure consists of a needle cage which orients and contains the needle rollers, the needle rollers themselves, and an outer race (sometimes the housing itself).
Radial needle bearings are cylindrical and use rollers parallel to the axis of the shaft. Thrust needle bearings are flat and use a radial pattern of needles.
Full complement bearings have solid inner and outer rings and rib-guided cylindrical rollers. Since these bearings have the largest possible number of rolling elements, they have extremely high radial load carrying capacity and are suitable for particularly compact designs. 

 

Specifications

Bearing No.	Boundary Dimensions (mm)			Basic Load Rating (KN)
	Fw	Ew	Bc	C	Co
KZK 8X12X8	8	12	8	3.76	3.664
KZK 10X14X8.7	10	14	8.7	3.84	4
KZK 10X14X10	10	14	10	4	4.128
KZK 12X15X13	12	15	13	4.24	5.92
KZK 12X16X10	12	16	10	4.88	5.92
KZK 12X16X11	12	16	11	4.96	5.68
KZK 12X17X10	12	17	10	5.616	5.616
KZK 12X18X10	12	18	10	5.92	5.76
KZK 13X18X10	13	18	10	5.76	6.64
KZK 14X18X10	14	18	10	5.68	6.8
KZK 14X19X10	14	19	10	5.84	6.08
KZK 14.4X20.4X10	14.4	20.4	10	6.45	6.24
KZK 15X19X9	15	19	9	5.44	5.68
KZK 15X19X10	15	19	10	5.76	6.72
KZK 15X20X10	15	20	10	6.24	7.28
KZK 15X20X12	15	20	12	6.4	7.68
KZK 15X21X10	15	21	10	6.72	8.4
KZK 15X21X11	15	21	11	6.8	8.56
KZK 15.2X22.2X12	15.2	22.2	12	6.88	8.88
KZK 16X20X10	16	20	10	6.56	7.36
KZK 16X20X24	16	20	24	6.96	7.52
KZK 16X21X10	16	21	10	7.04	7.84
KZK 16X22X11.7	16	22	11.7	8.8	9.52
KZK 16X22X12	16	22	12	8.8	9.52
KZK 16X22X14	16	22	14	10.56	11.144
KZK 17X21X10	17	21	10	6.08	7.2
KZK 17X23X11	17	23	11	6.48	9.04
KZK 18X22X10	18	22	10	6.08	7.84
KZK 18X22X24	18	22	24	6.08	13.76
KZK 18X24X11.6	18	24	11.6	9.28	10.48
KZK 18X24X12	18	24	12	9.28	10.48
KZK 18X24X13.3	18	24	13.3	7.2	8.56
KZK 18X24X13.5	18	24	13.5	7.2	8.56
KZK 18X24X15	18	24	15	10.56	12.4
KZK 19X25X16	19	25	16	9.68	12.4
KZK 19X28X14	19	28	14	9.68	12
KZK 20X25X16	20	25	16	7.92	9.84
KZK 20X26X12	20	26	12	8.08	10
KZK 20X26X14	20	26	14	10.08	13.36
KZK 20X26X17	20	-	17	10.16	14.08
KZK 22X28X13	22	28	13	9.52	13.2
KZK 22X28X14	22	28	14	10.08	13.44
KZK 22X28X15	22	28	15	10.8	14.8
KZK 22X28X16	22	28	16	11.52	16.08
KZK 22X29X15	22	29	15	14.24	17.44
KZK 22X29X16	22	29	16	14.24	17.44
KZK 22X30X16	22	30	16	14.96	17.84
KZK 23X29X13	23	29	13	8	9.04
KZK 23X30X14	23	30	14	7.48	8.08
KZK 23X30X16	23	30	16	7.824	9.44
KZK 23.1X28.1X14	23.1	28.1	14	8.48	12.64
KZK 24X30X15	24	30	15	8.96	10.96
KZK 24X30X16	24	30	16	8.96	10.96
KZK 25X30X28	25	30	28	10.64	12.16
KZK 25X31X12	25	31	12	6.96	7.04
KZK 25X31X17	25	31	17	7.36	7.8
KZK 25X31X20	25	31	20	7.76	8.48
KZK 25X32X16	25	32	16	14.56	18.48
KZK 25.1X30.1X14	25.1	30.1	14	10.96	15.2
KZK 26X34X16	26	34	16	9.36	14
KZK 28X33X14	28	33	14	10.56	17.52
KZK 28X34X14	28	34	14	13.2	16.56
KZK 28X35X15	28	35	15	14.4	17.6
KZK 28X35X16	28	35	16	15.12	18.4
KZK 28X36X16	28	36	16	15.6	21.6
KZK 28X38X13.6	28	38	13.6	13.84	16.24
KZK 30X36X16	30	36	16	15.12	18.24
KZK 30X37X16	30	37	16	17.2	24.4
KZK 30X38X16	30	38	16	18.16	26.08
KZK 32X40X22	32	40	22	22.24	31.44
KZK 32X42X20	32	42	20	20.8	32.16
KZK 38X46X20	38	46	20	24.88	34.4
KZK 40X48X17	40	48	17	23.2	31.2
KZK 40X48X20	40	48	20	26	40.8

FAQ

1.    Q: Are you a factory or trading company?

A: We have our own factory to produce goods for you.

2.    Q: Where is your factory?

A: Our factory is located in Hefei, Anhui. And we have office in Shanghai.

3.    Q: How can I get some samples?

A: We will offer you samples all for free, and shipping cost should be paid by the buyers.

4.    Q: Material used?

A: Chrome steel, carbon steel, ISO9001:2008 certificate to ensure the quality. And we have a strong testing team to make sure every piece of bearing is in good quality.

5.    Q: What about the delivery time?

A: 3-45 days after the order is confirmed.

6.    Q: Payment terms?

A: 1. 30%T/T as deposit and balanced paid before delivery.

   2. L/C

   3. Western union

   4. PayPal