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NTNPrecision Angular Contact Ball Bearing 85x120x18 mm, 15° Contact Angle, ISO P5 / ABEC 5, Thin Section, Open

Condition: New – Open box
Condition Note: Made In Japan, New Old Stock, Stained

Availability:

3 in stock

Single-row precision angular contact ball bearing, 85 mm bore x 120 mm OD x 18 mm wide, 15° contact angle, ISO P5 / ABEC 5 tolerance. Thin-section 19-series spindle envelope. Open, no seals. Sold as one bearing.

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$76.48

3 in stock

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Specifications

Key Specifications

MFR / BrandNTN
Model7917 C P5 71917
Bearing TypeAngular Contact Ball Bearing, Open
ID85 mm
OD120 mm
Width18 mm

Technical Specifications

MaterialChrome Steel
Series7900
Base Number7917 / 71917
Industry Termsprecision angular contact bearing, spindle bearing, ABEC 5 bearing, P5 bearing, thin section bearing, 15 degree contact angle, 71917, rotary table bearing
Common MisspellingsNTN 7917 CP5, 7917-CP5, 7917CP-5, NTM 7917CP5, 71917 CP5
Application TypesPrecision drive spindles, indexing tables, rotary axes, precision gearboxes, machine tool rebuilds
Bore Shaft Size85 mm
Mpn Variants7917CP5, 7917-C-P5, 7917 C P5, 7917C, 71917CP5, 71917C
Manufacturer StatusNTN current production designation
Compatible With ReplacesNTN 7917C precision spindle positions, 71917C, 7917 15° P5 thin-section angular contact bearings
Rolling ElementsBall
Number Of Rows1
Bore TypeStraight
Snap Ring IncludedWithout Snap Ring
Harmonization Code8482.10.50.28
Part Number7917CP5

Cross-References

Cross Reference 1NSK 7917CTYNP5 - 15 deg, P5
Cross Reference 2SKF 71917 CD/P4A - 15 deg, P4A (tighter class)
Cross Reference 3FAG B71917-C-T-P4S - 15 deg, P4S (tighter class)
Cross Reference 4Fafnir 2MM9117WICR - 15 deg
Cross Reference 5RHP 7917CTP5 - 15 deg, P5
Cross Reference 6NSK 7917A5TYNP5 - 25 deg, more thrust, less speed
Cross Reference 7SKF 71917 ACD/P4A - 25 deg, P4A
Cross Reference 8Fafnir 3MM9117WI - 25 deg
Cross Reference 9NTN 7917CGD2GLP4 - universally ground, preload-matched, P4
Seller Part Number: AJ5B3#BGOJDF

Product Description

What this part is

An NTN 7917C precision angular contact ball bearing, 85 mm bore x 120 mm outside diameter x 18 mm wide, in the 71917 / 7917 thin-section spindle envelope. It carries radial load plus thrust in one direction, with the high shoulder facing the thrust.

Decoding the designation

7917 — single-row angular contact ball bearing, 19-series thin section, 85 x 120 x 18 mm. The 71917 form describes the same bearing.

C — contact angle 15° in NTN nomenclature.

P5 — ISO tolerance class 5, equivalent to ABEC 5.

What these specs mean in practice

15° is the high-speed end of the contact-angle range. The shallow angle keeps the ball load path closer to radial, so centrifugal ball loading and heat generation stay low and the bearing tolerates a higher DN value than a 25° or 40° equivalent, at the cost of thrust capacity and axial stiffness. An 18 mm width on an 85 mm bore makes this a thin-section bearing for spindle positions where axial space is tight and several bearings are stacked in a short length. P5 / ABEC 5 tightens bore, outside diameter, width and running accuracy well beyond a standard bearing; it is the grade used for precision drive spindles, indexing tables and rotary axes.

Published dimensions

Bore Diameter (d): 85 mm. Outside Diameter (D): 120 mm. Width (B): 18 mm. Contact Angle: 15°. Number Of Rows: 1. Precision Class: ISO P5 / ABEC 5. Closure Type: Open, no seals or shields.

Mounting data

A single angular contact bearing locates the shaft in one direction only. The bearing is open and relies on the housing for sealing.

Quantity and configuration

One bearing: a complete unit with inner ring, outer ring, ball complement and cage. This is a single bearing with no universal-grinding or preload suffix, not a matched set. The matched universally ground version of this envelope is NTN 7917CGD2GLP4.

Interchange guidance

15° equivalents on the 85 x 120 x 18 mm envelope: NSK 7917CTYNP5 and 71917CTYNP5, SKF 71917 CD/P4A (P4A, one class tighter), FAG B71917-C-T-P4S (one class tighter), Fafnir 2MM9117WICR, RHP 7917CTP5. The same envelope at 25°: NSK 7917A5TYNP5, SKF 71917 ACD/P4A and Fafnir 3MM9117WI, with more thrust capacity and less speed. Several of these are P4 / ABEC 7, a tighter grade than P5.

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