Motor Starters vs. Contactors vs. Overload Relays: What Each One Does and Why You Need All Three
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Angular contact ball bearing, 80 x 110 x 16 mm, 15° contact angle, counterbored outer ring, thin-section 1900 series, open both faces, straight bore.
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| MFR / Brand | MRC |
|---|---|
| MPN | 1915R |
| Model | 1915 R |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 80 mm |
| OD | 110 mm |
| Width | 16 mm |
| Series | 1900 |
|---|---|
| Condition | New |
| Material | Bearing Steel |
| Base Number | 1916R (ISO 71916 envelope) |
| Industry Terms | Angular contact ball bearing; thin section spindle bearing; extra-light series bearing; Marlin Rockwell; 71916 |
| Common Misspellings | 1916-R; 1916 R; MCR 1916R; 1916RA |
| Condition Note | Made In USA, New Old Stock |
| Bore Shaft Size | 80 mm |
| Mpn Variants | 1916R; 1916-R; 1916 R; 1915R; 1915-R |
| Rolling Elements | Balls |
| Number Of Rows | 1 |
| Bore Type | Straight, counterbored outer ring |
| Snap Ring Included | Without Snap Ring |
| Limiting Speed | 6700 rpm |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Part Number | 1916R |
| Cross Reference 1 | SKF 71916 CD (same envelope, 15° execution) |
|---|---|
| Cross Reference 2 | FAG B71916-C (same envelope, 15° execution) |
| Cross Reference 3 | NSK 71916C (same envelope, 15° execution) |
MRC 1916R single-row angular contact ball bearing. Bearing type: Angular contact ball bearing. Bore: 80 mm. Outside Diameter: 110 mm. Overall Width: 16 mm. Contact Angle: 15°. Bore Type: Straight. Closure Type: Open, both faces. Number Of Rows: 1. Rolling Elements: Ball. Series: MRC 1900 extra-light, ISO 719 dimension series. Unit Quantity: 1 Pc.
19 — MRC 1900 extra-light series, the thinnest standard angular contact section, matching the ISO 719 dimension series.
16 — bore code giving Bore: 80 mm.
R — R-type execution, counterbored outer ring, Contact Angle: 15°. The counterbore lets the full ball complement load from one side and sets the low-angle geometry.
Contact Angle: 15°. The shallow angle favours speed and radial stiffness while still locating the shaft axially, which is the combination machine-tool spindles and indexing heads are built around. A 15 mm radial section across an 80 mm shaft makes this one of the slimmest angular contact sections at that bore, so the housing bore stays at 110 mm. Each bearing takes thrust in one direction, and units are commonly installed in opposed pairs or sets so thrust is carried both ways.
Unit Quantity: 1 Pc. One bearing, open on both faces, straight bore.
The high shoulder is the thrust face and the low face carries the counterbore, so the orientation on assembly sets the direction of thrust support. Mounting force is applied to the ring being fitted, squarely against its own face. The bearing locates axially against a shaft shoulder and a housing shoulder or endcap.
The 80 x 110 x 16 mm envelope is the ISO 71916 seat. At 15° the direct equivalents are the C-suffix executions — SKF 71916 CD, FAG B71916-C and NSK 71916C. A 71916 ACD or other 25° execution shares the same seats at a steeper contact angle and is a related size rather than an interchange.
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