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NTNAngular Contact Ball Bearing — 20 mm ID, 47 mm OD, 14 mm Width, 30° Contact Angle, Back-to-Back, Light Preload

Condition: New

Availability:

2 in stock

Angular contact ball bearing pair, 20 mm bore, 47 mm OD, 14 mm width each, 30° contact angle, back-to-back DB, Light preload. Pair rating 23,600 N dynamic.

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List Price

$77.95

2 in stock

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Specifications

Key Specifications

MFR / BrandNTN
Model7204-DB
Bearing TypeAngular Contact Ball Bearing, Open
ID20 mm
OD47 mm
Width14 mm

Technical Specifications

MaterialHigh carbon chrome steel
Series7200
Total Width28 mm (pair)
Mpn Variants7204DB, 7204DB-GL, 7204DBGL, 7204 DB GL, 7204-DB
Precision ClassABEC 1 / P0
Min Temp-40 °C
Cage TypePressed
Dynamic Load Rating23,600 N (pair)
Static Load Rating16,800 N (pair)
Rolling ElementsBall
Max Temp120 °C
Item Weight0.210 kg (0.454 lb) (pair)
Cage MaterialPressed steel
Number Of Rows1
Bore TypeStraight
Snap Ring IncludedNo
Limiting Speed14,000 rpm grease; 18,000 rpm oil (pair)
Harmonization Code8482.10.50.28
Contact Angle30°
PreloadLight
Mounting ArrangementBack-to-back (DB)
Bearing MaterialHigh carbon chrome steel

Cross-References

Cross Reference 1Koyo 7204DB
Cross Reference 2NSK 7204ADB
Seller Part Number: B-AF3B2#MGNNWB

Product Description

What this part is

NTN 7204DB (7204DB-GL) is a matched pair of single-row angular contact ball bearings ground for back-to-back mounting with a light preload. Bore Diameter: 20 mm. Outside Diameter: 47 mm. Width: 14 mm per bearing. Total Width: 28 mm (pair). Contact Angle: 30°. Preload: Light. Cage Material: Pressed steel. Precision Class: ABEC 1 / P0. Closure Type: Open.

Decoding the designation

7204 — ISO 72 series (light section), bore code 04, 20 x 47 x 14 mm. No angle letter: 30° contact angle.

DB — back-to-back matched pair. Two single-row bearings ground as a set. Not a double-row bearing.

GL — Light preload.

What these specs mean in practice

Dynamic Load Rating: 23,600 N (pair). Static Load Rating: 16,800 N (pair). Limiting Speed: 14,000 rpm grease; 18,000 rpm oil (pair). Item Weight: 0.210 kg (0.454 lb) (pair). Material: High carbon chrome steel. Operating Temperature Range: -40 to 120 °C. The 30° angle balances radial and axial capacity, and back-to-back mounting gives the pair moment stiffness and axial location in both directions.

Mounting data

Fillet Radius r: 1.0 mm. Fillet Radius r1: 0.6 mm. Shaft Abutment da min: 25.5 mm. Housing Abutment Da max: 41.5 mm. Housing Abutment Db max: 42.5 mm.

Quantity and configuration

Unit Quantity: 2 Pcs. One matched DB pair.

Interchange guidance

Cross-Reference: Koyo 7204DB and NSK 7204ADB, 30° back-to-back pairs on the same 20 x 47 x 14 mm envelope.

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