store 
Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
1 in stock
Matched duplex pair of super-precision angular contact ball bearings, 20 x 47 x 14 mm, 25° contact angle, phenolic cage, medium preload.
List Price
$134.95
1 in stock
On the Shelf & Ready to Ship
On all orders
No Risk, No Hassle
| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM204WI-DUM |
| GTIN | 087796051935 |
| Model | 3MM 204 WI DUM / B 7204 E T P4 DUM / 7204ACD 7204A5 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 20 mm |
| OD | 47 mm |
| Width | 14 mm |
| Material | Bearing Steel |
|---|---|
| Series | 200 (ISO 72) |
| Base Number | 3MM204WI |
| Industry Terms | Spindle bearing, machine tool bearing, super precision angular contact, matched duplex pair, DUM set, 7204 |
| Common Misspellings | Fafner, Faffnir, 3MM204W1, 3MM 204 WL, 3MM204WI DUNI |
| Bore Shaft Size | 20 mm |
| Mpn Variants | 3MM204WI-DUM, 3MM204WIDUM, 3MM 204 WI DUM, 3MM-204-WI-DUM, 3MM-204-WI-CR-DUM, 7204-E, 7204-A, 7204ACD, 7204A5, 3MM204WI |
| Closure Type | Open |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.68 |
| Part Number | 3MM204WI-DUM |
Fafnir 3MM204WI-DUM matched duplex pair of super-precision angular contact ball bearings, 200 series. Brand: Fafnir (Timken). Part Number: 3MM204WI-DUM. Bore: 20 mm. Outside Diameter: 47 mm. Overall Width: 14 mm per bearing. Design Units: Metric. Number Of Rows: 1 per bearing. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Bearing Material: Chrome bearing steel. Item Weight: 0.23 lbs.
Contact Angle: 25°. Precision Class: P4S. Precision Rating: ABEC 7/9. Cage Material: Phenolic. Cage Type: Machined, outer-ring land-riding. Preload: Medium. Arrangement / Configuration: Matched duplex pair, universally ground. Series: 200, carrying the ISO 7204 envelope. The 3MM prefix marks the 25° super-precision execution, which is why the carton also carries the 7204-E, 7204ACD and 7204A5 equivalents.
Dynamic Load Rating: 14 kN. Static Load Rating: 6.55 kN. Limiting Speed: 32000 rpm. A 25° contact angle carries more thrust and locates the shaft more stiffly along its axis than the 15° version of the same 7204 envelope. The medium preload class sits between light and heavy, trading a little speed for added stiffness. The machined phenolic cage rides on the outer ring land, staying centred at speed and holding lubricant against the ball pockets. Max Temp: 120°C. Min Temp: -30°C. Internal Clearance: N/A — the pair is set by preload rather than by clearance.
Unit Quantity: 2 Pcs. Mounting Arrangement: Universal. The two bearings are ground as a matched set, so mounting them against one another produces the medium preload class directly, with no shims and no regrinding. Universal grinding also allows a back-to-back, face-to-face or tandem stack. Total Width: 28 mm for the pair as mounted.
Cross-References: SKF 7204 ACD/P4ADGB, FAG B7204-E-T-P4S-DUM, NSK 7204A5TYNDUMP4, Timken 7204ACD. Each is a 25° medium-preload duplex set on the 20 x 47 x 14 mm envelope. Harmonization Code: 8482.10.50.68.
MPN Variants: 3MM204WI-DUM, 3MM204WIDUM, 3MM 204 WI DUM, 3MM-204-WI-DUM, 3MM-204-WI-CR-DUM, 7204-E, 7204-A, 7204ACD, 7204A5, 3MM204WI.
Rockwell’s own product page for the Kinetix 6000 is down
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
When an HMI panel goes dark or a PLC module stops communicating, the machine it
If you have ever watched a machine glide smoothly back and forth, tracing a perfect
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
Sort
Brand
Price
MPN
Categories
