Cylindrical roller bearings are available in the double-row NN series, NNU series, and four-row cylindrical roller bearings. Cylindrical roller bearings typically use stamped steel cages, while larger bearings or those designed for high-speed rotation use machined brass cages. Double- and four-row cylindrical roller bearings use latch cages to extend bearing life.
There are different types designated NU, NJ, NUP, N, NF for single-row bearings, and NNU, NN for double-row bearings depending on the design or absence of side ribs. HZK’s cylindrical roller bearings come in the following series with various cage designs and Metric dimensions.
Model number | Basic dimensions(mm) d | Basic dimensions(mm) D | Basic dimensions(mm) B | Rated load (N) Cr | Rated load (N) Cor | Limiting speed (1) (rpm) Grease lubrication | Limiting speed (1) (rpm) oil lubrication | Weight ≈kg |
|---|---|---|---|---|---|---|---|---|
| NNU4920 | 100 | 140 | 40 | 155000 | 395000 | 4000 | 5000 | 1.9 |
| NNU4921 | 105 | 145 | 40 | 161000 | 345000 | 3800 | 4800 | 1.99 |
| NNU4922 | 110 | 150 | 40 | 167000 | 335000 | 3600 | 4500 | 2.07 |
| NNU4924 | 120 | 165 | 45 | 183000 | 360000 | 3200 | 4000 | 2.85 |
| NNU4926 | 130 | 180 | 50 | 274000 | 545000 | 3000 | 3800 | 3.85 |
| NNU4928 | 140 | 190 | 50 | 283000 | 585000 | 2800 | 3600 | 4.08 |
| NNU4930 | 150 | 210 | 60 | 350000 | 715000 | 2600 | 3200 | 6.39 |
| NNU4932 | 160 | 220 | 60 | 365000 | 760000 | 2400 | 3000 | 6.76 |
| NNU4934 | 170 | 230 | 60 | 375000 | 805000 | 2400 | 2800 | 7.12 |
| NNU4936 | 180 | 250 | 69 | 480000 | 1020000 | 2200 | 2600 | 10.4 |
| NNU4938 | 190 | 260 | 69 | 495000 | 1060000 | 2000 | 2600 | 10.9 |
| NNU4940 | 200 | 280 | 80 | 570000 | 120000 | 1900 | 2400 | 15.3 |
| NNU4944 | 220 | 300 | 80 | 600000 | 1330000 | 1700 | 2200 | 16.6 |
| NNU4948 | 240 | 320 | 80 | 625000 | 1450000 | 1600 | 2000 | 18 |
| NNU4952 | 260 | 360 | 100 | 935000 | 2100000 | 1400 | 1800 | 31.3 |
| NNU4956 | 280 | 380 | 100 | 960000 | 2230000 | 1300 | 1700 | 33 |
Shandong HZK Bearing Factory, located in Panzhuang Industrial Park, Linqing City, Shandong Province, covers a total building area of over 10,000 square meters. HZK BEARING FACTORY mainly produces and sells spherical roller bearings, cylindrical roller bearings, deep groove ball bearings, tapered roller bearings, thrust self-aligning roller bearings, automotive wheel bearings, and more. The factory is equipped with fully automated workshops, heat treatment equipment, lathes, grinding machines, ultra-precision equipment, and assembly facilities. We utilize industry-leading production equipment and testing instruments, and have multi-story warehouses to fully guarantee bearing quality and delivery speed. HZK BEARING also customizes various non-standard products. We welcome customers to visit our factory for guidance, business negotiations, and mutual development.
faq
Q: What is your delivery time?
A: If the goods are in stock, it generally takes 5-10 days. If the goods are not in stock, it takes 15-20 days depending on the quantity.
Q: How are you packaged?
A: Packaging can be customized according to customer requirements.
Q: Are we a trading company or a manufacturer?
A: We are a manufacturer with our own factory.
Q: I want a specific size or color of goods, can you customize it?
A: We provide rolls and sheets, as well as post-processing services such as logo printing.
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