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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.
Needle bearings Specification
NA4900 | 10 | 22 | 13 | 7.60 | 9.10 | 31000 | 0.025 |
NA4901 | 12 | 24 | 13 | 8.60 | 11.1 | 28000 | 0.028 |
NA4902 | 15 | 28 | 13 | 9.05 | 12.6 | 23000 | 0.036 |
NA4903 | 17 | 30 | 13 | 9.60 | 14.0 | 21000 | 0.040 |
NA4904 | 20 | 37 | 17 | 15.9 | 21.1 | 18000 | 0.081 |
NA4905 | 25 | 42 | 17 | 18.3 | 26.9 | 15000 | 0.096 |
NA4906 | 30 | 47 | 17 | 19.9 | 31.3 | 13000 | 0.110 |
NA4907 | 35 | 55 | 20 | 26.9 | 49.0 | 11000 | 0.186 |
NA4908 | 40 | 62 | 22 | 32.6 | 58.5 | 9700 | 0.249 |
NA4909 | 45 | 68 | 22 | 33.2 | 61.9 | 9000 | 0.294 |
NA4910 | 50 | 72 | 22 | 35.6 | 70.2 | 8100 | 0.298 |
NA4911 | 55 | 80 | 25 | 44.4 | 87.2 | 7500 | 0.428 |
NA4912 | 60 | 85 | 25 | 45.8 | 93.3 | 6900 | 0.459 |
NA4913 | 65 | 90 | 25 | 66.1 | 114 | 6400 | 0.450 |
NA4914 | 70 | 100 | 30 | 86.4 | 157 | 5700 | 0.733 |
NA4915 | 75 | 105 | 30 | 88.0 | 164 | 5400 | 0.773 |
NA4916 | 80 | 110 | 30 | 91.6 | 176 | 5100 | 0.819 |
NA4917 | 85 | 120 | 35 | 110 | 230 | 4600 | 1.25 |
Machined type needle roller bearing | |||
1 | Bearing No. | RNA4900 (2RS) --- RNA4910 (2RS) | |
2 | Bearing type | Machined type needle roller bearing | |
3 | Bearing material | Chrome steel (AISI52100, Gcr15, 100Cr6…) | |
4 | Bearing structure | Outer ring, Needle rollers, Cage assembly | |
5 | Bearing basic size | Inner ring diameter | 14mm -- 58mm (d) |
Outer ring diameter | 22mm -- 72mm (D) | ||
Bearing width | 13mm -- 22mm (B) | ||
6 | Production standard | GB/T 6445-2007, JB/T 8878-2001 | |
7 | Available designs | "RNA" | Normal type |
"RNA…RS" | Contact seals on one side | ||
"RNA…2RS" | Contact seals on both sides | ||
8 | Matched bearing | AXW type needle roller bearing | |
9 | Bearing sample | Available for testing before order in free | |
10 | Bearing packing | STWB box packing or white box packing, per cartons, per pallets | |
Industrial white box packing, per cartons, per pallets | |||
Bulk packing, per cartons, per pallets | |||
11 | Bearing marking | Bearing No., Brand name, Origin…available in ring races | |
12 | OEM | Available and highly welcomed | |
13 | Bearing feature | Single row design, Machined ring type, Groove on ring races… | |
14 | Operating temperature | -20℃ to +120℃, if beyond this range, please consult | |
15 | Bearing application | Autos, Textiles, Medical machinery, Mining equipments… | |
16 | Delivery time | Samples | 2-3 days after confirmation |
Stocks | 5-7 days after confirmation | ||
Normal production | 20-25 days after confirmation | ||
17 | H.S Code | 8482400000 | |
18 | Payment item | T/T, L/C, D/P, D/A, OA…all payment terms in negociable |
Anhui TOPZY Bearing import&export Co., Ltd. is Specializing in production the
bearings , our bearing are widely used by big mechanical corporations. Topzy bearing
has high-quality management team,experienced pratitioners,and quick response and professional service team,and meanwhile is equipped with first-class automatic production
lines as well as complete quality management machines and system.
we sincerely hope to establish a good business relationship with you in the future.
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Why choose us?
1.Highest quality and most competitive price----we are the only one manufacture It is amazing, and with cheap price and guaranteed quality.
2.Delivery fast -----Goods be sent out within 3 to 7 days based on order quantity.
3.Professional-----We are special in source and sells, as development, methods, conjugations, and handling.
4.Best service-----Answering e-mails or solving questions timely. Delivery and update information on time. Trust, good quality and service are the basic of long term business.
Factory Price
Big Stocks !!!