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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.
Availability:
2 in stock
SKF 71940 ACDGA/P4A super-precision angular contact bearing, 200 x 280 x 38 mm, 25° contact angle, class P4A. Universally matchable, extra light preload GA.
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| MFR / Brand | SKF |
|---|---|
| MPN | 71940 ACDGA/P4A |
| Model | 71940ACD/P4A DGA |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 200 mm |
| OD | 280 mm |
| Width | 38 mm |
| Series | 71900 |
|---|---|
| Preload | Extra light (GA) |
| Base Number | 71940 |
| Industry Terms | Spindle bearing; super-precision bearing; precision angular contact bearing; machine tool bearing; large-bore spindle bearing |
| Common Misspellings | 71940 ACDGA P4A; 71940ACGDA/P4A; 719 40 ACDGA; 71940ACDG4/P4A; 71940 ADC P4A DGA |
| Application Types | Machine tool spindles; grinding spindles; high-speed motor spindles; precision rotary tables |
| Overall Width | 38 mm |
| Mpn Variants | 71940 ACDGA/P4A; 71940-ACD/P4ADGA; 71940-ACD-P4A-DGA; 71940ACDP4ADGA; 7940A; 71940AC |
| Arrangement Configuration | Universally matchable |
| Precision Class | P4A |
| Closure Type | Open |
| Cage Type | Outer-ring shoulder-guided |
| Dynamic Load Rating | 199,000 N |
| Static Load Rating | 250,000 N |
| Precision Rating | P4A |
| Rolling Elements | Ball |
| Item Weight | 6.04 kg (13.32 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 3MM9340WICRSUL - light preload |
|---|---|
| Cross Reference 2 | FAG B71940-E-T-P4S-UL - light preload |
| Cross Reference 3 | NSK 7940A5TRSULP4 - light preload |
| Cross Reference 4 | RHP 71940X3TRSULP4 - light preload |
SKF 71940 ACDGA/P4A super-precision, high-capacity, universally matchable single-row angular contact ball bearing. Open, straight bore, extra light preload (GA).
719 — ISO extra-light dimension series. A 200 mm bore carries a 280 mm outside diameter in a 38 mm section.
40 — bore code. 40 × 5 = 200 mm.
AC — 25° contact angle.
D — high-capacity internal design.
GA — universally matchable, extra light preload.
P4A — SKF super-precision tolerance class, P4 dimensional accuracy with tighter running accuracy.
Bore Diameter: 200 mm.
Outside Diameter: 280 mm.
Overall Width: 38 mm.
Contact Angle: 25°.
Dynamic Load Rating: 199,000 N per bearing.
Static Load Rating: 250,000 N per bearing.
Precision Class: P4A.
Preload: Extra light (GA).
Rolling Elements: Ball. Number Of Rows: 1. Bore Type: Straight.
Closure Type: Open, supplied unlubricated and preserved.
Cage Type: Outer-ring shoulder-guided.
Bearing Material: Bearing steel.
Item Weight: 6.04 kg (13.32 lb) per bearing.
Mounting Arrangement: universally matchable, back-to-back, face-to-face or tandem. Contact type is normal, two-point. Both rings are one piece. Harmonization Code: 8482.10.50.
Cross-references at 25°, light preload (SKF GA is extra light): Timken/Fafnir 3MM9340WICRSUL, FAG B71940-E-T-P4S-UL, NSK 7940A5TRSULP4, RHP 71940X3TRSULP4. GB (light) and GC (medium) preload are separate SKF parts on the same envelope. MPN variants: 71940 ACDGA/P4A, 71940-ACD/P4ADGA, 71940-ACD-P4A-DGA, 71940ACDP4ADGA, 7940A, 71940AC.
The contact angle is 25° (AC design).
GA is universally matchable with extra light preload; P4A is SKF’s super-precision tolerance class.
Dynamic load rating 199,000 N and static load rating 250,000 N, both per bearing.
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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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