NSK7204A5TRDULP3Angular Contact Ball Bearing Matched Pair – 20 mm Bore, 47 mm OD, 14 mm Width, 25° Contact Angle, Phenolic Cage, Light Preload, P3 Precision

Product Description

What this part is:

NSK 7204A5TRDULP3 is a super precision angular contact ball bearing supplied as a factory-matched duplex universal pair (Unit Quantity: 2 Pcs). Each bearing is 20 mm bore, 47 mm outside diameter and 14 mm wide, with a 25° contact angle, a machined phenolic cage and light preload.

Decoding the designation:

7204 — the ISO 7204 boundary size, 20 x 47 x 14 mm.

A5 — a 25° contact angle.

TR — an outer-ring-guided machined phenolic cage, rated to 120 °C.

DU — duplex universal pairing, mountable back-to-back, face-to-face or in tandem.

L — light preload, 112 N across the pair.

P3 — an NSK special class combining P4 dimensional accuracy with P2 running accuracy.

Specifications:

Bore Diameter: 20 mm. Outside Diameter: 47 mm. Overall Width: 14 mm per bearing. Total Width: 28 mm for the pair. Contact Angle: 25°. Dynamic Load Rating: 17.6 kN. Static Load Rating: 7.75 kN. Permissible Axial Load: 7.40 kN. Limiting Speed: 29,900 rpm grease; 44,800 rpm oil or oil-air. Precision Class: P3, with P4 dimensional accuracy and P2 running accuracy. Preload: Light (L), 112 N for a DB or DF pair. Cage Material: Phenolic. Cage Type: Outer-ring guided, machined. Rolling Elements: Ball. Number Of Rows: 1 per bearing. Closure Type: Open. Bore Type: Straight. Material: High Carbon Chrome Steel. Lubricant: Grease or oil. Item Weight: 0.102 kg per bearing. Series: 7200. Base Number: 7204.

Dimensions and mounting:

Shaft Fillet Radius r min: 1 mm. Inner Ring Front Face Fillet r1 min: 0.6 mm. Shaft Abutment Diameter da min: 26 mm. Housing Abutment Diameter Da max: 41 mm. Housing Bore Shoulder Db max: 42 mm. Shaft Fillet ra max: 1 mm. Housing Fillet rb max: 0.5 mm. Effective Load Centre a: 14.8 mm, measured from the bearing face. Axial Rigidity: 73 N/µm at light preload. Recommended grease quantity: 0.63 g per bearing. Mounting Arrangement: back-to-back, face-to-face or tandem.

Frequently asked questions:

What are the dimensions of the NSK 7204A5TRDULP3?

Each bearing is 20 mm bore, 47 mm outside diameter and 14 mm wide. The pair measures 28 mm in total width.

What do A5, TR, DU and L mean in 7204A5TRDULP3?

A5 is a 25° contact angle, TR is an outer-ring-guided machined phenolic cage, DU is duplex universal pairing and L is light preload of 112 N across the pair.

What are the load ratings and the set quantity?

The set is 2 Pcs, one matched duplex pair. Each bearing has a dynamic load rating of 17.6 kN and a static load rating of 7.75 kN.