RHP7006CTSULP6Angular Contact Ball Bearing, Super Precision – 30 mm ID, 55 mm OD, 13 mm Width, Open, 15° Contact Angle, Light Preload, P6 / ABEC 3, Phenolic Cage, 2 Pcs

Product Description

What this part is

An RHP 7006CTSULP6 super-precision angular contact ball bearing, 30 mm bore, 55 mm outside diameter, 13 mm width. Open on both faces, phenolic window cage, straight bore.

Decoding the designation

In the RHP and NSK scheme, 7006 is the ISO 70 light series at 30 mm bore. The C is a 15° contact angle. The T is a fabric-base laminated phenolic cage. SU marks a universally ground single bearing, so any two of them assemble back-to-back, face-to-face or in tandem. The L is light preload. P6 is the tolerance class, equivalent to ABEC 3.

What these specs mean in practice

A 15° contact angle favours speed and radial stiffness over thrust capacity, which is why it is the standard angle for machine-tool spindles. The phenolic cage is light and self-lubricating and supports the 24,000 rpm limiting speed. Dynamic radial rating 16 kN (3,600 lbf), static radial rating 11.2 kN (2,520 lbf). Preload and running clearance are alternative settings, so a preloaded bearing carries no internal clearance class.

Quantity and configuration

Two pieces per unit. Universally ground singles at light preload, matched by grinding rather than by a factory-fitted spacer, so the pair produces the published preload in any of the three arrangements.

Fitting notes

Universal grinding puts the preload in the ring faces, so the pair is clamped solid against square shoulders and a solid nut, with no shim stack. Mounting a universal pair against an existing bearing of a different preload grade changes the resulting axial stiffness of the stack.

Interchange guidance

The FAG B7006-C-T-P6-UL is the direct equivalent: same 15° angle, phenolic cage, universal grinding and P6 class. The Fafnir 2MM9106WI CR SUL and the NSK 7006CTYNSULP4 are related sizes at the same envelope; the Fafnir substitutes an outer-land-riding phenolic cage and the NSK is a tighter P4 class with a polyamide cage.