Needle Roller Bearings distributors 鈼?Introduction Combined roller bearings consist of solid ring needle roller bearings, ball bearings and roller bearings, which can withstand unidirectional or bidirectional axial loads. The bearing has a compact structure, small volume, and high rotation accuracy. It can bear a high radial load and a certain axial load at the same time. The product structure is diverse, adaptable and easy to install. Combined roller bearings usually have the NKIA type which is a combination of needle roller and angular contact ball bearings. Type NKIB is a combination of needle roller and angular contact separable ball bearings. Types NX and NKX without inner ring needle roller bearing and thrust ball bearing combination. Type NKXR without inner ring needle roller bearing and thrust cylindrical roller bearing combination. Combined needle roller and bidirectional thrust cylindrical roller bearings, types ZARF and ZARN. Combined needle roller bearings are widely used in textile machinery, printing machinery, automobile industry, machine tools, metallurgical machinery, printing machinery and other mechanical equipment. 鈼?Bearing Series The types of the bearings include NX series, NX..-Z series, NKX series, NKX..-Z series, NKXR series, NKXR..-Z series, NKIA series, NKIB series, ZARF series, ZARF..-L series, ZARN series and ZARN..-L series. NX typeNKX typeNKXR type NKIB typeZARN typeZARF type 鈼?Production Details 鈼?Process needle rollers Generally, needle rollers are divided into round heads and flat heads. Tolerance classes are G2, G3 and G5, which are a combination of needle diameter and shape tolerances. For specific details, please refer to the relevant provisions of national standards. The cylindrical surface of the needle roller is only allowed to protrude in the middle, and the Ra is not more than 0.2um. It is not allowed to have defects such as cracks and rust. The manufacturing process of the needle roller is related to the structure and shape of the end face of the needle roller and the forming method of the blank. The manufacturing process of a round head needle roller for turning a blank is as follows: breaking the trapezoidal head of the car 鈫?channeling 鈫?soft grinding of the end face 鈫?hot cleaning and drying 鈫?upsetting round head 鈫?soft channeling round head 鈫?heat treatment 鈫?hard channeling round head 鈫?rough grinding of outer diameter 鈫?fine grinding outer diameter 鈫?final grinding outer diameter 鈫?hot cleaning, drying, wiping 鈫?sawdust polishing 鈫?final inspection and sorting 鈫?oiling and packaging. 鈼?Universal length measuring instrument The universal length measuring instrument is an optical measuring instrument that can measure both directly (0~100mm) and comparatively (0~500mm). It can not only measure the inner and outer dimensions, but also the diameter of the small hole (褎1~褎20mm), the pitch diameter of the thread, etc. The graduation value of the universal length measuring instrument is 0.001mm. Measuring range: direct measurement of external dimensions is 0~100mm, and comparative measurement of external dimensions is 0~500mm. The inner dimension measurement range is 10~200mm, and 1~20mm when using the electric eye device. The measuring range of the pitch diameter of the external thread is 0~180mm, and the measuring range of the pitch diameter of the internal thread is 14~140mm. 鈼?Annealing Process of Bearing Steel The annealing heating temperature range of GCr15 bearing steel should be 780~810鈩? usually 790卤10鈩?is more appropriate. When the heating temperature of GCr15 steel exceeds 730~765鈩? pearlite begins to transform into austenite. The higher the temperature, the more uniform the austenite structure, the less undissolved carbides, and the flaky pearlite structure is easily formed after cooling. Therefore, 840 掳C is the upper limit of the annealing temperature, beyond this temperature, coarse pearlite will appear in the annealed structure. In short, if the temperature is too high, the workpiece will overheat and become a substandard product. If the temperature is too low, part of the flaky pearlite after forging will be retained, and it will no longer crystallize into fine spherical pearlite, making its hardness too high and causing unqualified products. 鈼?Standard 鈼?ISO 15 Rolling bearings - Radial bearings - Boundary dimensions, general plan. 鈼?ISO 76 Rolling bearings. Static load rating. 鈼?ISO 281 Rolling bearings. Dynamic load and lifetime. 鈼?ISO 492 Rolling bearings. Radial Bearings. Tolerances. 鈼?ISO 582 Rolling bearings. Chamfer dimensions - Maximum values. 鈼?ISO 1132-2 Rolling bearings. Tolerances. Measuring and checking methods and principles. 鈼?ISO 5753 Rolling bearings. Inner radial clearance. 鈼?FAQ (Frequently Asked Questions) Q1: How long will our the inquiry and question be answered? A1: After receiving your inquiry and question, we will reply you within 1 to 6 hours. Q2: How about the quality of bearings? A2: We supply high quality bearings and strictly follow ISO9001 standard for production. Q3: What is the MOQ of the products? A3: Usually the MOQ is 1 piece, and depending on the model. Q4: How about the Delivery time of the products? A4: Usually the delivery time is 3 to 15 days, and depending on the quantity. Q5: How do you control the quality of the products and check the quality before delivery? A5: Our company has a professional quality inspection department, which strictly controls the quality of products, and has complete after-sale service. 鈼?About Us Shaanxi Gainhui Heavy Industries Co., Ltd. is a professional bearing manufacturer and and distributor in china. Equipped with a professional large factory, we can supply competitive bearing products and OEM service to worldwide customers. With high quality, competitive price and great after-sale service of combined roller bearings, welcome to contact us in time. Because we are focused, we are professional. 鈼?Packing Methods Tube PackageSingle Box PackagePallet Package 鈼?Delivery Methods By ExpressBy SeaBy Air 鈼?Technical Parameters Bearing designationMassDimensions (mm)Basic dynamic load ratingBasic static load ratingBasic dynamic load ratingBasic static load ratingLimiting speed mdDHH1H2H3CC1D1D2D3BB1B2rr1d1JDadaCaCoaCrCorOilGrease 鈮坘g min.min. max.min.NNNNmin鈥?min鈥? ZARF1560-TV0.4215604026鈥?/p鈥?/p14835鈥?/p鈥?/p7.5鈥?/p鈥?/p0.30.63.246362824 90053 00013 00017 5008 5002 200 ZARF1560-L-TV0.451560鈥?/p鈥?/p53391483524347.520.5110.30.63.246362224 90053 00013 00017 5008 5002 200 ZARF1762-TV0.4917624327.5鈥?/p鈥?/p14838鈥?/p鈥?/p9鈥?/p鈥?/p0.30.63.248392826 00057 00014 00019 9007 8002 100 ZARF1762-L-TV0.521762鈥?/p鈥?/p5741.5148382838923110.30.63.248392626 00057 00014 00019 9007 8002 100 ZARF2068-TV0.5620684629鈥?/p鈥?/p14842鈥?/p鈥?/p10鈥?/p鈥?/p0.30.63.253433333 50076 00014 90022 4007 0002 000 ZARF2068-L-TV0.612068鈥?/p鈥?/p60431484230401024110.30.63.253432833 50076 00014 90022 4007 0002 000 ZARF2575-TV0.7825755033鈥?/p鈥?/p181047鈥?/p鈥?/p10鈥?/p鈥?/p0.30.63.258483935 50086 00022 60036 0006 0001 900 ZARF2575-L-TV0.842575鈥?/p鈥?/p654818104736451025110.30.63.258483435 50086 00022 60036 0006 0001 900 ZARF3080-TV0.8530805033鈥?/p鈥?/p181052鈥?/p鈥?/p10鈥?/p鈥?/p0.30.63.263534439 000101 00024 30041 5005 5001 800 ZARF3080-L-TV0.93080鈥?/p鈥?/p654818105240501025110.30.63.263533839 000101 00024 30041 5005 5001 800 ZARF3590-TV1.1235905435鈥?/p鈥?/p181060鈥?/p鈥?/p11鈥?/p鈥?/p0.30.63.273615056 000148 00026 00047 0004 8001700 ZARF3590-L-TV1.253590鈥?/p鈥?/p705118106045581127120.30.63.273614356 000148 00026 00047 0004 8001700 ZARF40100-TV1.35401005435鈥?/p鈥?/p181065鈥?/p鈥?/p11鈥?/p鈥?/p0.30.63.280665559 000163 00027 50053 0004 4001600 ZARF40100-L-TV1.4540100鈥?/p鈥?/p705118106550631127120.30.63.280664859 000163 00027 50053 0004 4001600 ZARF45105-TV1.7451056040鈥?/p鈥?/p22.512.570鈥?/p鈥?/p11.5鈥?/p鈥?/p0.30.6685716061 000177 00038 00074 0004 0001500 ZARF45105-L-TV1.8545105鈥?/p鈥?/p755522.512.570566811.526.5120.30.6685715461 000177 00038 00074 0004 0001500 ZARF50115-TV2.1501156040鈥?/p鈥?/p22.512.578鈥?/p鈥?/p11.5鈥?/p鈥?/p0.30.6694796790 000300 00040 00082 0003 6001200 ZARF50115-L-TV2.4550115鈥?/p鈥?/p785822.512.578607811.529.5120.30.6694795890 000300 00040 00082 0003 6001200 ZARF2080-TV1.120806038鈥?/p鈥?/p181052鈥?/p鈥?/p12.5鈥?/p鈥?/p0.30.63.263533864 000141 00022 60036 00060001500 ZARF2080-L-TV1.222080鈥?/p鈥?/p7553181052405012.527.5110.30.63.263533864 000141 00022 60036 00060001500 ZARF2590-TV1.625906038鈥?/p鈥?/p181062鈥?/p鈥?/p12.5鈥?/p鈥?/p0.30.63.273634580 000199 00024 30041 50049001400 ZARF2590-L-TV1.752590鈥?/p鈥?/p7553181062486012.527.5110.30.63.273634580 000199 00024 30041 50049001400 ZARF30105-TV1.95301056641鈥?/p鈥?/p181068鈥?/p鈥?/p14鈥?/p鈥?/p0.30.63.2856952107 000265 00026 00047 00044001300 ZARF30105-L-TV2.1530105鈥?/p鈥?/p825718106852661430120.30.63.2856950107 000265 00026 00047 00044001300 ZARF35110-TV1.6351106641鈥?/p鈥?/p181073鈥?/p鈥?/p14鈥?/p鈥?/p0.30.63.2887460105 000265 00027 50053 00040001250 ZARF35110-L-TV1.8535110鈥?/p鈥?/p825718107360731430120.30.63.2887458105 000265 00027 50053 00040001250 ZARF40115-TV2.7401157547.5鈥?/p鈥?/p22.512.578鈥?/p鈥?/p16鈥?/p鈥?/p0.30.66947965117 000315 00038 00074 00037001200 ZARF40115-L-TV340115鈥?/p鈥?/p9365.522.512.57860781634120.30.66947958117 000315 00038 00074 00037001200 ZARF45130-TV3.9451308251鈥?/p鈥?/p22.512.590鈥?/p鈥?/p17.5鈥?/p鈥?/p0.30.661059170154 000405 00040 00082 00033001150 ZARF45130-L-TV4.345130鈥?/p鈥?/p1037222.512.590708817.538.5140.30.661059168154 000405 00040 00082 00033001150 ZARF50140-TV4.2501408251鈥?/p鈥?/p22.512.595鈥?/p鈥?/p17.5鈥?/p鈥?/p0.30.661139675172 000480 00042 00090 0003 1001100 ZARF50140-L-TV4.6550140鈥?/p鈥?/p1037222.512.595759317.538.5140.30.661139673172 000480 00042 00090 0003 1001100 ZARF55145-TV4.5551458251鈥?/p鈥?/p22.512.5100鈥?/p鈥?/p17.5鈥?/p鈥?/p0.30.6611810185177 000500 00044 00098 0002 9001000 ZARF55145-L-TV555145鈥?/p鈥?/p1037222.512.5100809817.538.5140.30.6611810178177 000500 00044 00098 0002 9001000 ZARF60150-TV4.7601508251鈥?/p鈥?/p22.512.5105鈥?/p鈥?/p17.5鈥?/p鈥?/p0.30.6612310690187 000550 00044 50092 0002 700950 ZARF60150-L-TV5.3560150鈥?/p鈥?/p1037222.512.51059010517.538.5160.30.6612310688187 000550 00044 50092 0002 700950 ZARF65155-TV5.1651558251鈥?/p鈥?/p22.512.5110鈥?/p鈥?/p17.5鈥?/p鈥?/p0.30.6612811197172 000500 00054 000104 0002 600900 ZARF65155-L-TV5.765155鈥?/p鈥?/p1037222.512.51109010817.538.5160.30.6612811188172 000500 00054 000104 0002 600900 ZARF70160-TV5.2701608251鈥?/p鈥?/p22.512.5115鈥?/p鈥?/p17.5鈥?/p鈥?/p0.30.66133116100201 000630 00056 000119 0002 400800 ZARF70160-L-TV5.9570160鈥?/p鈥?/p1037222.512.511510011517.538.5160.30.6613311698201 000630 00056 000119 0002 400800 ZARF75185-TV9.47518510062鈥?/p鈥?/p2715135鈥?/p鈥?/p21鈥?/p鈥?/p0.316155136113290 000890 00072 000132 0002 100700 ZARF75185-L-TV10.675185鈥?/p鈥?/p1258727151351151352146160.316155136110290 000890 00072 000132 0002 100700 ZARF90210-TV13.79021011069.5鈥?/p鈥?/p3217.5160鈥?/p鈥?/p22.5鈥?/p鈥?/p0.318180161130325 000103000098 000210 0001 800700 ZARF90210-L-TV15.190210鈥?/p鈥?/p13594.53217.516013015822.547.5160.318180161125325 000103000098 000210 0001 800700 For more data, please click the download button at the top of this page to download the catalogue.Needle Roller Bearings distributors website:http://www.gi-bearing.com/roller-bearings/needle-roller-bearings/
duopeiban17
10 Blog posts
