Timing Belt Pulleys and V-Belt Sheaves: Matching Belt Drive Components Correctly
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
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Super-precision angular contact ball bearing, 90 x 160 x 30 mm, ISO 7218 envelope. Machined bronze cage, ABEC 7/9, low shoulder on both rings.
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$162.53
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Here are some other options that might fit your project — cross-referenced equivalents and similar parts we have in stock and ready to ship. Need help choosing? Call 585-295-7880.
Angular Contact Ball Bearing - 90 mm ID, 160 mm OD, 30 mm Width, 15° Contact Angle, Medium Preload, Phenolic Cage, ISO P4$220.92
Super-Precision Angular Contact Ball Bearing - 90 mm Bore, 160 mm OD, 30 mm Width, 15° Contact Angle, ABEC 7 / P4, Light Preload, Phenolic Cage$327.36
Super Precision Angular Contact Ball Bearing - Straight Bore, 90 mm ID, 160 mm OD, 30 mm Width, Open, 15° Contact Angle, Universal Medium Preload, ABEC 7 / P4$373.37
Super Precision Angular Contact Ball Bearing 90x160x30 mm, 15° Contact Angle, Duplex Light Preload, Phenolic Cage, 2 Pcs$748.29| MFR / Brand | Fafnir |
|---|---|
| MPN | MM218WIMBR |
| Model | 7218 MB/M MM 218 WI MBR |
| Bearing Type | Angular Contact Ball Bearing |
| ID | 90 mm |
| OD | 160 mm |
| Width | 30 mm |
| Base Number | 218 |
|---|---|
| Bore Shaft Size | 90 mm |
| Mpn Variants | MM-218-WI-MBR, MM 218 WI MBR, MM218WI MBR, 7218MB, 7218M |
| Precision Class | ABEC 7/9 (ISO P4S) |
| Cage Type | Machined, Outer Ring Guided |
| Precision Rating | ABEC 7/9 (ISO P4S) |
| Series | 200WI |
| Cage Material | Bronze |
| Number Of Rows | 1 |
| Design Units | Metric |
| Part Number | MM218WIMBR |
| Cross Reference 1 | 7218 MB |
|---|
Fafnir MM218WIMBR, a super-precision spindle angular contact ball bearing from Timken’s Fafnir 200WI range. Bore: 90 mm. Outside Diameter: 160 mm. Overall Width: 30 mm. Precision Class: ABEC 7/9 (ISO P4S). Cage Type: machined, outer ring guided. Cage Material: bronze. Rolling Elements: steel balls. Number of Rows: 1. Design Units: Metric. Manufacturer Part Number: MM218WIMBR.
MM — Fafnir super-precision spindle execution, ground to ABEC 7/9 (ISO P4S) tolerance.
218 — 200WI dimension series, bore code 18. That is the ISO 7218 envelope: 90 mm bore, 160 mm outside diameter, 30 mm width.
WI — low shoulder on both rings, which is what allows the high ball complement to be ground into this section.
MBR — machined bronze cage, one piece, guided on the outer ring.
A machined bronze cage is the choice for heavy preload and high temperature. Bronze keeps its form where a resin cage softens, it tolerates marginal lubrication because the cage material itself is a bearing surface against the balls, and its stiffness resists the pocket wear that comes with high ball loads. The trade is mass: bronze is heavier than phenolic, so the cage contributes more to ball-set inertia at the top of the speed range.
ABEC 7/9 grinding is what holds the running accuracy a machine tool spindle needs: the bore, outside diameter and raceway are gauged to super-precision limits so runout stays inside a few microns.
Unit Quantity: 1 Pc. One single-row bearing.
Cross-Reference: 7218 MB, as marked. Searchable variants of the Fafnir number: MM218WIMBR, MM-218-WI-MBR, MM 218 WI MBR, MM218WI MBR, 7218MB, 7218M.
The 2MM218WICR is the same 90 x 160 x 30 mm envelope at a 15° contact angle with a phenolic outer land riding cage.
$43.50
29 in stock
$760.47
16 in stock
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Tapered, cylindrical, and spherical roller bearings all solve the same basic problem, carrying more load
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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