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SKF71940ACDP4ADGAAngular Contact Ball Bearing — Super-Precision P4A, 200 mm ID, 280 mm OD, 38 mm Width, 25° Contact Angle, Universally Matchable, Extra Light Preload

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2 in stock

Super-precision angular contact ball bearing, 200 x 280 x 38 mm, 25° contact angle, class P4A. Universally matchable, extra light preload GA.

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$3,785.93

2 in stock

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Specifications

Key Specifications

MFR / BrandSKF
MPN71940ACDP4ADGA
Model71940ACD/P4A DGA
Bearing TypeAngular Contact Ball Bearing, Open
ID200 mm
OD280 mm
Width38 mm

Technical Specifications

Series71900
PreloadExtra light (GA)
Base Number71940
Industry TermsSpindle bearing; super-precision bearing; precision angular contact bearing; machine tool bearing; large-bore spindle bearing
Common Misspellings71940 ACDGA P4A; 71940ACGDA/P4A; 719 40 ACDGA; 71940ACDG4/P4A; 71940 ADC P4A DGA
Application TypesMachine tool spindles; grinding spindles; high-speed motor spindles; precision rotary tables
Overall Width38 mm
Mpn Variants71940 ACDGA/P4A; 71940-ACD/P4ADGA; 71940-ACD-P4A-DGA; 71940ACDP4ADGA; 7940A; 71940AC
Arrangement ConfigurationUniversally matchable
Precision ClassP4A
Closure TypeOpen
Cage TypeOuter-ring shoulder-guided
Dynamic Load Rating199,000 N
Static Load Rating250,000 N
Precision RatingP4A
Rolling ElementsBall
Item Weight6.04 kg (13.32 lb)
Number Of Rows1
Bore TypeStraight
Snap Ring IncludedNo
Harmonization Code8482.10.50
Contact Angle25°
Mounting ArrangementUniversally matchable — back-to-back, face-to-face or tandem
Bearing MaterialBearing steel

Cross-References

Cross Reference 1Timken/Fafnir 3MM9340WICRSUL
Cross Reference 2FAG B71940-E-T-P4S-UL
Cross Reference 3NSK 7940A5TRSULP4
Cross Reference 4RHP 71940X3TRSULP4
Seller Part Number: B-DC2#JPMYAM

Product Description

What this part is

SKF 71940 ACDGA/P4A super-precision, high-capacity, universally matchable single-row angular contact ball bearing. Bore Diameter: 200 mm. Outside Diameter: 280 mm. Overall Width: 38 mm. Contact Angle: 25°. Precision Class: P4A. Number Of Rows: 1. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Cage Type: Outer-ring shoulder-guided. Bearing Material: Bearing steel. Item Weight: 6.04 kg (13.32 lb) per bearing.

Decoding the designation

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. The higher angle carries more axial load and raises axial stiffness.

D — high-capacity internal design.

GA — universally matchable, extra light preload.

P4A — SKF super-precision tolerance class: P4 dimensional accuracy with running accuracy held tighter still.

What these specs mean in practice

Dynamic Load Rating: 199,000 N. Static Load Rating: 250,000 N. Both figures are per bearing. At this section the static rating sits well above the dynamic one, which is normal for the extra-light 719 series and sets a high permanent-deformation limit at rest.

Contact Angle: 25°. Radial load is carried together with axial load acting in one direction, with the steeper load line favouring thrust capacity and axial stiffness over top speed.

Closure Type: Open, supplied unlubricated and preserved for spindle-shop cleaning and grease or oil charging at build. Contact type is normal, two-point. Both rings are one piece.

Mounting data

Mounting Arrangement: universally matchable back-to-back, face-to-face or tandem. Bore Type: Straight. Item Weight: 6.04 kg (13.32 lb) per bearing. Harmonization Code: 8482.10.50.

Interchange guidance

Same envelope, same 25° angle, same super-precision class: Timken/Fafnir 3MM9340WICRSUL, FAG B71940-E-T-P4S-UL, NSK 7940A5TRSULP4, RHP 71940X3TRSULP4.

Preload class is part of the identity. GB (light preload) and GC (medium preload) are different parts on the same envelope.

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