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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
3 in stock
Matched duplex pair of angular contact ball bearings, 90 x 160 x 30 mm, 15° contact angle, medium preload, laminated phenolic cage, open.
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$705.89
3 in stock
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| MFR / Brand | RHP |
|---|---|
| MPN | 7218CTDUMP4 |
| Model | 7218 C T DUM P4 / 2MM218WI CR DUM / 7218C / 218HDM |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 90 mm |
| OD | 160 mm |
| Width | 30 mm |
| Material | Chrome Steel |
|---|---|
| Base Number | 7218 |
| Bore Shaft Size | 90 mm |
| Mpn Variants | 7218CTDUMP4, 7218-C-T-DUM-P4, 7218 C T DUM P4, 7218C, B7218X2TADUMEP7, 2MM218WICR-DUM, 218HDM |
| Series | 7200 (ISO dimension series 02) |
| Rolling Elements | Ball |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Harmonization Code | 8482.10.50.28 |
| Part Number | 7218CTDUMP4 |
| Cross Reference 6 | RHP 7218ETDUMP4 (related size, 25° contact angle) |
|---|
RHP 7218CTDUMP4 super precision angular contact ball bearings, supplied as a matched duplex pair. Series: 7200, ISO dimension series 02. Bore: 90 mm. Outside diameter: 160 mm. Width: 30 mm each bearing, 60 mm assembled. Straight bore, open on both faces, ball rolling elements in chrome bearing steel to SAE 52100. Country of origin as recorded: United Kingdom.
Contact Angle: 15°. Cage: laminated phenolic resin, machined and outer-ring guided. Grouping: DU, paired unit. Preload: M, medium. Precision Grade: P4, equal to RHP EP7 and ABEC 7. Searchable forms include 7218CTDUMP4, 7218-C-T-DUM-P4, 7218 C T DUM P4, 7218C, the RHP B-series form B7218X2TADUMEP7 and the Fafnir crosses 2MM218WICR-DUM and 218HDM.
Dynamic Load Rating: 123 kN per bearing. Static Load Rating: 105 kN per bearing. Limiting speed for a single bearing: 7,800 rpm with grease, 13,400 rpm with oil/air. Medium preload carries a 0.60 factor on a back-to-back pair, giving 4,680 rpm and 8,040 rpm. Medium preload sits between light and heavy, reaching 187 N/µm of axial stiffness at 1,860 N of preload, which suits a spindle that needs more rigidity than a light setting gives without the heat penalty of a heavy one. A 15° contact angle runs faster and carries less thrust than a 25° bearing on the same envelope.
Two bearings, a matched duplex pair. Universal face control means they mount back-to-back, face-to-face or in tandem at the same medium preload, set at manufacture.
Abutment diameters from the RHP super precision tables: shaft shoulder d1 minimum 100 mm, housing shoulder D1 maximum 150 mm, D2 maximum 154 mm. Fillet radius r minimum 2.5 mm, r1 minimum 1.0 mm. Effective load centre a = 31.7 mm. Internal free volume 95.1 cm³ per bearing. Lubrication jet pitch circle 116.7 mm. Mass 2.206 kg per bearing, 4.412 kg for the pair.
Same-specification equivalents at 15° and medium preload: SKF 7218 CD/P4ADGB, FAG B7218-C-T-P4S-DUM, Fafnir 2MM218WICR-DUM, NSK 7218CTRDUMP4. RHP 7218ETDUMP4 is a related size at 25°.
$137.64
92 in stock
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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