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Help CenterKB030XP0 Thin Section Four Point Contact Ball Bearing With Size 3×3.625×0.3125inch
Product Spotlights
2. radial, bidirectional‑axial and overturning‑moment loads
3. high rotary accuracy and low torque fluctuation
4. open‑type design with good heat dissipation, widely used in robot joints, opto‑electronic turntables, semiconductor equipment, medical machinery and aerospace systems。
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KB Series Thin Section Ball Bearing Four Point Contact X-type
Product Overview:
KB‑X series is imperial‑standard Open‑type Constant Cross‑Section Four‑Point‑Contact Ball Bearing (Type‑X) from Kaydon Reali‑Slim portfolio, with fixed square cross‑section of 7.9375 mm (0.3125 inch), open‑type without seals. Adopting gothic‑arch raceway (Type‑X four‑point‑contact) geometry, one single bearing can accommodate radial load, bidirectional axial thrust and overturning‑moment simultaneously. It can directly replace two duplex angular‑contact bearings, reducing part count, saving axial installation envelope and simplifying mechanical layout.
Cross‑section dimension keeps constant regardless of bore‑size increase, realizing large‑bore, thin‑wall and lightweight construction. AR0 solid brass cage is standard. Compared with KAA‑X and KA‑X series, larger‑size rolling elements deliver improved load‑carrying capacity, rigidity and anti‑tilting performance. Suitable for heavy‑load precision rotary applications with combined loads and compact‑space constraints. Standard bore ranges from 2‑24 inches, widely applied in heavy‑duty robot joints, opto‑electronic tracking turntables, radar rotary mechanisms, semiconductor equipment, medical machinery and aerospace systems.
Applications:
heavy‑duty industrial robot joints
medium‑large opto‑electronic tracking turntables
heavy‑load radar rotary mechanisms
large‑size semiconductor inspection turntables
large‑precision medical rotary equipment
heavy‑load aerospace rotary assemblies
optical heavy‑duty indexing mechanisms
heavy‑duty precision test fixtures
automated heavy‑load rotary platforms
Parameter：
| Item No. | Dimension | Basic Cap | Unit | ||||
| ( inch / mm ) |
( N ) | weight | |||||
| d | D | Cor | Cr | Coa |
Ca | Kg | |
| KB020XP0 | 2.0 |
2.625 | 4130 | 2000 | 10400 | 5020 | 0.073 |
| 50.8 | 66.675 | ||||||
| KB025XP0 | 2.5 | 3.125 |
5070 | 2310 | 12620 | 5730 | 0.091 |
| 63.5 | 79.375 | ||||||
| KB030XP0 | 3.0 | 3.625 | 5960 | 2580 | 14890 | 6400 | 0.109 |
| 76.2 | 92.075 | ||||||
| KB035XP0 | 3.5 | 4.125 | 6850 | 2800 | 17160 | 7070 | 0.125 |
| 88.9 | 104.775 | ||||||
| KB040XP0 | 4.0 | 4.625 | 7780 | 3070 | 19430 | 7650 | 0.14 |
| 101.6 | 117.475 | ||||||
| KB042XP0 | 4.25 | 4.875 | 8130 | 3160 | 20310 | 7910 | 0.147 |
| 107.95 | 123.825 | ||||||
| KB045XP0 | 4.5 | 5.125 | 8670 | 3290 | 21690 | 8220 | 0.16 |
| 114.3 | 130.175 | ||||||
| KB047XP0 | 4.75 | 5.375 | 9020 | 3380 | 22580 | 8450 | 0.163 |
| 120.65 | 136.525 | ||||||
| KB050XP0 | 5.0 | 5.625 | 9560 | 3510 | 23910 | 8800 | 0.172 |
| 127.0 | 142.875 | ||||||
| KB055XP0 | 5.5 | 6.125 | 10490 | 3730 | 26180 | 9340 | 0.186 |
| 139.7 | 155.575 | ||||||
| KB060XP0 | 6.0 | 6.625 | 11380 | 3960 |
28450 | 9870 | 0.205 |
| 152.4 |
168.275 | ||||||
| KB065XP0 | 6.5 | 7.125 | 12270 | 4130 | 30720 | 10400 | 0.216 |
| 165.1 | 180.975 | ||||||
If you have need ,welcome to customize according to your drawings or samples.
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