RHP7019CTBDULP6Super Precision Angular Contact Ball Bearing – Matched Pair, Straight Bore, 95 mm ID, 145 mm OD, 24 mm Width, Open, 15° Contact Angle, Universal Light Preload, ABEC 3

Product Description

What this part is

RHP 7019CTBDULP6 is a super precision single-row angular contact ball bearing supplied as a universally matched pair. Bore: 95 mm. Outside diameter: 145 mm. Width: 24 mm per bearing, 48 mm for the pair. Series: 7000, ISO dimension series 10. Contact Angle: 15°. Precision Class: RHP P6, equal to BS292 EP3 and ABEC 3. Searchable forms of the designation include 7019CTBDULP6, 7019-C-TB-DUL-P6, 7019 C TB DUL P6, 7019C and B7019X2TADULEP3.

Decoding the designation

Type: single-row angular contact ball bearing. Dimension Series: 10. Bore Code: 19, giving a 95 mm bore. Contact Angle: 15°. Grouping: DU, a matched pair. Preload: L, light. Precision Grade: P6. Cage: outer-ring-guided laminated phenolic, the standard cage across the RHP super precision range.

What these specs mean in practice

A 15° contact angle favours speed and radial stiffness over thrust capacity. Dynamic Load Rating: 73.5 kN per bearing. Static Load Rating: 73.0 kN per bearing. Light preload sets 540 N of axial preload across the pair and delivers 124 N/µm of axial stiffness, which holds shaft position under load while keeping heat generation low. P6 accuracy tightens running accuracy over standard tolerance, lowering runout and vibration. The laminated phenolic cage runs to 120 °C and is quiet at speed. Rings and balls are SAE 52100 chrome bearing steel, through hardened and heat treated for dimensional stability.

Speed and lubrication

Limiting speed as a back-to-back light-preload pair: 11,200 rpm with oil/air lubrication and 6,880 rpm with grease. Mounted face-to-face those figures halve. Grease fill for a low or medium speed spindle is 30% of the 51.8 cm³ internal volume, 20% above 60% of maximum speed, and 10 to 15% above 80%. Lubrication jet pitch circle diameter: 113.3 mm.

Quantity and configuration

Unit Quantity: 2 Pcs, one universally matched pair. Universal face control means the pair mounts back-to-back, face-to-face or in tandem at the same preload, with no ground spacers required. The high point of radial runout is marked by a burnished spot on the inner ring face and a V line on the outer diameter; the V also shows the direction of the contact angle.

Fitting notes

Effective load centre a: 28.1 mm. Abutment diameters: shaft shoulder d1 104 mm minimum, housing shoulder D1 136 mm maximum, seal counterbore D2 139 mm maximum. Fillet radii: r 1.5 mm, r1 1.0 mm. Mass: 1.211 kg per bearing. Abutment faces on the shaft and housing are ground square to the spindle axis to keep assembled runout low.

Interchange guidance

Equivalents at the same envelope, 15° angle and light preload: Fafnir 2MM9119WI CR DUL and RHP B-series B7019X2TADULEP3. RHP 7019A5 is the 25° bearing in the same envelope and is a related size. RHP 7919 is 95 x 130 x 18 mm in ISO series 19 and is a different envelope.