RHP7005ETBDUMP6Angular Contact Ball Bearing – 25 mm ID, 47 mm OD, 12 mm Width, Open, 25° Contact Angle, Medium Preload, Phenolic Cage, P6 / ABEC 3

Product Description

What this part is

An RHP 7005E-TB-DUM-P6 angular contact ball bearing. Bore: 25 mm (0.9843 in). Outside Diameter: 47 mm (1.8504 in). Width: 12 mm (0.4724 in). Closure: Open. Bore type: Straight. Rolling elements: Ball. Contact Angle: 25°. Cage Type: one-piece machined, inner-ring centred. Cage Material: laminated phenolic resin. Preload: Medium (M). Precision Class: P6 (ISO Class 6, ABEC 3, RHP class code EP3). Series: ISO series 10 (70xx). Bearing Material: carbon chrome bearing steel, BS970 534A99/535A99 or SAE 52100. Number of Rows: 1. Universally ground for duplex mounting.

Decoding the designation

7005 — ISO dimension series 10, bore code 05, giving 25 x 47 x 12 mm.

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

TB — one-piece machined laminated phenolic cage, inner-ring centred.

DU — duplex universally ground, so the ring faces are finished to develop the stated preload when clamped.

M — medium preload.

P6 — ISO Class 6, ABEC 3, RHP class code EP3.

B7005X3TDUMEP3 — the RHP B-series form on the same carton. X3 reads the angle a second way as 25° and EP3 restates P6, so both the angle and the class are confirmed twice from the carton alone.

Load ratings

Dynamic Load Rating Cr: 11.1 kN (11,100 N). Static Load Rating C0r: 7.1 kN (7,100 N). Maximum recommended operating temperature: 120 °C, set by the laminated phenolic cage. Lubricant: Grease or oil.

What these specs mean in practice

A 25° contact angle sits at the stiff end of the spindle range: it carries more thrust and gives higher axial rigidity than a 15° bearing of the same size, in exchange for a lower speed ceiling. Medium preload holds the shaft firmly under cutting load and generates more heat than a light set. Universal grinding means the ring faces are finished so any two bearings of this designation clamp into a matched medium-preload set without shimming, back-to-back, face-to-face or in tandem. The laminated phenolic cage is light, retains an oil film well and runs quietly at speed, and it sets the assembly temperature ceiling at 120 °C.

Quantity and configuration

Unit Quantity: 1 Pc, a single universally ground bearing. Number of Rows: 1. Total Width: 12 mm.

Thrust direction

A single-row angular contact ball bearing carries radial load together with thrust in one direction. A second bearing mounted opposed to this one locates the shaft in both directions.

Mounting data

Shaft abutment diameter d1: 30 mm minimum. Housing abutment diameter D1: 42 mm maximum. Outer ring abutment D2: 44.5 mm maximum. Chamfer r: 0.6 mm minimum. Chamfer r1: 0.3 mm minimum. Effective load centre a: 14.4 mm. Internal free volume: 3.8 cm³. PCD of lubrication jets: 32.9 mm. Mass: 0.079 kg.

Interchange guidance

The current NSK designation for the same 25°, medium-preload, phenolic-caged bearing at this class is NSK 7005A5TRDUMP6. The Fafnir-scheme form on the carton is 3M9105WI DUM. The 15° version of this size, coded C by RHP and NSK, is a related size rather than an interchange, and light or heavy preload builds change spindle stiffness and running temperature. Manufacturer status: the RHP brand is now supplied under NSK. Harmonization Code: 8482.10.50.