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
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Super-precision angular contact ball bearing, 55 x 80 x 13 mm, 25° contact angle, tolerance class P4A. Universally matchable, medium preload class GB.
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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.
Super Precision Angular Contact Ball Bearing — 55 mm ID, 80 mm OD, 13 mm Width, 15° Contact Angle, Extra Light Preload, P4A$324.95
Thin Section Super Precision Angular Contact Ball Bearing Matched Pair 55x80x13 mm 15° ABEC 7 Light Preload$124.67
Angular Contact Ball Bearing — 55 mm ID, 80 mm OD, 13 mm Width, 15° Contact Angle, ABEC 7 / P4S, Light Preload$285.32
Super Precision Angular Contact Spindle Bearing 55 x 80 x 13 mm 15° Contact Angle P4$127.70| MFR / Brand | SKF |
|---|---|
| MPN | 71911CDP4ADGA |
| Model | 71911 ACD GA P4A / 3MM9311WI CR SUL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 55 mm |
| OD | 80 mm |
| Width | 13 mm |
| Material | Bearing Steel |
|---|---|
| Series | 71900 |
| Condition | New |
| Preload | Medium |
| Base Number | 71911 |
| Industry Terms | Spindle bearing; super-precision bearing; precision angular contact bearing; machine tool bearing |
| Common Misspellings | 71911 ACDGB P4A; 71911 ACGDB/P4A; 71911ACD GB P4A; 719 11 ACDGB; 71911ACDG8/P4A |
| Application Types | Machine tool spindles; grinding spindles; high-speed motor spindles; precision rotary tables |
| Overall Width | 13 mm |
| Mpn Variants | 71911 ACDGB/P4A; 71911-ACDGB/P4A; 71911ACDGBP4A; 71911-ACD-GB-P4A; 71911CD/P4ADGB; 7911A5 |
| Arrangement Configuration | Universally matchable single bearing |
| Precision Class | P4A |
| Dynamic Load Rating | 18,200 N |
| Static Load Rating | 13,700 N |
| Precision Rating | P4A |
| Rolling Elements | Ball |
| Item Weight | 0.176 kg (0.39 lb) |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25° |
| Mounting Arrangement | Universally matchable — back-to-back, face-to-face or tandem |
| Bearing Material | Bearing steel |
| Cross Reference 1 | Timken/Fafnir 3MM9311WICRSUM |
|---|---|
| Cross Reference 2 | FAG B71911-E-T-P4S-UM |
| Cross Reference 3 | NSK 7911A5TRSUMP4 |
| Cross Reference 4 | RHP 7911X3TRSUMP4 |
SKF 71911 ACDGB/P4A super-precision, high-capacity, universally matchable single-row angular contact ball bearing. Bore Diameter: 55 mm. Outside Diameter: 80 mm. Overall Width: 13 mm. Contact Angle: 25°. Precision Class: P4A. Number Of Rows: 1. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Bearing Material: Bearing steel. Item Weight: 0.176 kg (0.39 lb).
719 — ISO extra-light dimension series. A 55 mm bore carries an 80 mm outside diameter in a 13 mm section.
11 — bore code. 11 × 5 = 55 mm.
AC — 25° contact angle. The higher angle carries more axial load and raises axial stiffness.
D — high-capacity internal design.
GB — universally matchable, measuring load class B. Two or more bearings set against each other reach the medium preload step without shims or ground spacers.
P4A — SKF super-precision tolerance class: P4 dimensional accuracy with running accuracy held tighter still.
Dynamic Load Rating: 18,200 N. Static Load Rating: 13,700 N. The rating pair sets bearing life at speed and the permanent-deformation limit at rest.
Contact Angle: 25°. Combined radial and axial loading is carried with the axial component acting in one direction.
Contact type is normal, two-point. Both rings are one piece. Closure Type: Open, supplied unlubricated and preserved for spindle-shop cleaning and grease or oil charging at build.
Mounting Arrangement: universally matchable back-to-back, face-to-face or tandem. Bore Type: Straight. Item Weight: 0.176 kg (0.39 lb). Harmonization Code: 8482.10.50.
Unit Quantity: 1 Pc. A single universally matchable bearing, usable alone or paired with any other GB-class bearing of the same designation.
Same envelope, same 25° angle, same super-precision class: Timken/Fafnir 3MM9311WICRSUM, FAG B71911-E-T-P4S-UM, NSK 7911A5TRSUMP4, RHP 7911X3TRSUMP4.
Preload class is part of the identity. GA is the light step and GC the heavy step on the same envelope.
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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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