HMI Panels and PLC Modules: What They Do and How to Match a Replacement
When an HMI panel goes dark or a PLC module stops communicating, the machine it
Availability:
7 in stock
Deep groove ball bearing, 55 x 100 x 21 mm, steel shields both faces, straight bore, single row, grease filled, ISO 6211 envelope.
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| MFR / Brand | MRC |
|---|---|
| MPN | 211MFF |
| GTIN | 097741004725 |
| Model | 6211ZZ 6211-2Z |
| Bearing Type | Ball Bearing |
| ID | 55 mm (2.1654 in) |
| OD | 100 mm (3.9370 in) |
| Width | 21 mm |
| Condition | New – Open box |
|---|---|
| Base Number | 211 (ISO 6211 envelope) |
| Industry Terms | Deep groove ball bearing; shielded ball bearing; 6211 bearing; electric motor bearing; Marlin Rockwell |
| Common Misspellings | 211 MFF; 211-MFF; 211MMF; MCR 211MFF |
| Condition Note | Made In USA, New Old Stock |
| Bore Shaft Size | 55 mm (2.1654 in) |
| Mpn Variants | 211MFF; 211-M-FF; 211 M FF; 211MF; 6211-ZZ; 6211-2Z |
| Manufacturer Status | MRC brand acquired by SKF; designation discontinued |
| Material | Chrome bearing steel |
| Series | MRC 200 medium (ISO 62 dimension series) |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Harmonization Code | 8482.10.50 |
| Part Number | 211MFF |
| Cross Reference 1 | SKF 6211-2Z (same envelope, shielded both faces) |
|---|---|
| Cross Reference 2 | FAG 6211-2ZR (same envelope, shielded both faces) |
| Cross Reference 3 | NSK 6211ZZ (same envelope, shielded both faces) |
MRC 211MFF single-row deep groove ball bearing. Bearing type: Deep groove ball bearing. Bore: 55 mm. Outside Diameter: 100 mm. Overall Width: 21 mm. Closure Type: Steel shields, both faces. Bore Type: Straight. Number Of Rows: 1. Rolling Elements: Ball. Material: Chrome bearing steel. Unit Quantity: 1 Pc. GTIN: 097741004725. The envelope corresponds to an ISO 6211.
2 — MRC medium 200 dimension block, matching the ISO 62 series.
11 — bore code giving Bore: 55 mm.
FF — Closure Type: two steel shields, one on each face.
A deep groove ball bearing carries radial load together with moderate thrust in either direction, and runs faster for a given size than any other ball bearing type. Shields on both faces hold the factory grease charge in and keep swarf, dust and coarse contamination out, which is what makes this a sealed-for-life fit in electric motors, fans, gearboxes, pumps and conveyor idlers. Shields run with a small clearance rather than rubbing, so they cost far less friction and speed than contact rubber seals on the same envelope.
Unit Quantity: 1 Pc. One bearing, shielded both faces, straight bore.
Straight bore on an interference-fit shaft seat, outer ring located in a bored housing. The bearing takes thrust either way, so it works as a located or a free position depending on how the housing clamps the outer ring. Mounting force is applied through the ring being fitted rather than across the balls.
The 55 x 100 x 21 mm envelope is the ISO 6211 seat, so a shielded 6211 from any maker fits the same shaft and housing — SKF 6211-2Z, FAG 6211-2ZR and NSK 6211ZZ. An open 6211 or a 6211-2RS with contact rubber seals shares the same seats with a different closure.
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