RHP7006ETDULP4Angular Contact Ball Bearing — 30 mm ID, 55 mm OD, 13 mm Width, Open, 25° Contact Angle, Light Preload, Phenolic Outer-Ring-Guided Cage, ABEC 7

Product Description

What this part is:

RHP 7006ETDULP4 matched duplex pair of single-row super-precision angular contact ball bearings. 30 mm bore, 55 mm outside diameter, 13 mm width each, 26 mm stacked. Open on both faces. Machined laminated phenolic resin cage, outer ring guided. Unit Quantity: 2 Pcs, one matched duplex pair ground as a set.

Decoding the designation:

70 — ISO dimension series 10.

06 — bore code 06, 30 mm bore.

E — 25° contact angle, the legacy RHP form of the current A5 suffix.

T — machined laminated phenolic resin cage, outer ring guided.

DU — matched duplex pair, universally face-controlled.

L — light preload.

P4 — ISO Class 4.

Specifications:

Bore Diameter: 30 mm (1.1811 in). Outside Diameter: 55 mm (2.1654 in). Overall Width: 13 mm (0.5118 in) per bearing. Total Width: 26 mm for the pair. Contact Angle: 25°. Precision Class: P4 (ISO Class 4 / ABEC 7 / RHP class code EP7). Dynamic Load Rating Cr: 14,400 N. Static Load Rating C0r: 9,800 N. Limiting Speed, single bearing under spring preload: 37,000 rpm oil/air; 22,900 rpm grease. Limiting Speed, back-to-back light-preload pair: 29,600 rpm oil/air; 18,320 rpm grease. Preload: Light (L), 120 N axial. Axial Stiffness: 89 N per micrometre at light preload. Maximum operating temperature: 120 °C. Running Accuracy at ISO Class 4: inner ring radial runout Kia 2.5 µm; outer ring radial runout Kea 5 µm. Bearing Material: carbon chrome bearing steel, BS970 534A99/535A99 or SAE 52100. Item Weight: 0.114 kg per bearing, 0.228 kg per pair.

Dimensions and mounting:

Shaft abutment diameter d1 min: 36 mm. Housing abutment diameter D1 max: 49 mm. D2 max: 50 mm. Chamfer r min: 1.0 mm. Chamfer r1 min: 0.6 mm. Effective load centre a: 16.4 mm. Internal free volume: 5.3 cm3. PCD of lubrication jets: 39.5 mm. Each bearing takes thrust in one direction; a back-to-back or face-to-face pair takes thrust in both directions.

Compatibility and replacement:

Cross-references: NSK 7006A5TRDULP4 (current NSK designation, 25°); Fafnir 3MM9106WI-CR-DUL (25°, Fafnir scheme).

Frequently asked questions:

What are the dimensions of the RHP 7006ETDULP4?

30 mm bore, 55 mm outside diameter and 13 mm width per bearing; 26 mm stacked as a pair.

What contact angle does the RHP 7006ETDULP4 have?

25°, from the E in the designation, the legacy RHP form of the current A5 suffix.

What are the load ratings of the RHP 7006ETDULP4?

Dynamic load rating Cr 14,400 N and static load rating C0r 9,800 N, at P4 (ISO Class 4 / ABEC 7) precision.