FAGB7206CTPAP4K5ULSuper-Precision Angular Contact Spindle Bearing – 30 mm ID, 62 mm OD, 16 mm Width, Open, 15 degree contact angle, Phenolic cage, Light universal preload, P4S

Product Description

What this part is

FAG B7206C.TPA.P4S.UL is a single-row super-precision angular contact ball bearing — a spindle bearing — on the metric 72 light series, bore 30 mm, outside diameter 62 mm, width 16 mm. The bore is straight, both faces are open, the ball complement runs in a machined fabric-base laminate phenolic window cage, and internal clearance is standard. Running accuracy is class P4S. Mass is 0.19 kg, 0.42 lb.

Decoding the designation

Each group in the FAG order code carries one meaning. B marks the standard steel ball complement of the spindle bearing range. 72 is the light dimension series and 06 the 30 mm bore code. C is the FAG contact-angle code for 15°. TPA is a fabric-base laminate phenolic cage, the same cage family FAG later designated T; the glass-fibre polyamide cages carry TVP, TVH or TVPB instead. P4S is the super-precision accuracy class, ABEC 7 to ABEC 9 in the ANSI scheme. U marks a single universally ground bearing and L the light preload group. The T7 and K5 groups on the carton are recorded as carton markings so the exact box number stays searchable.

What these specs mean in practice

A 15° contact angle is the high-speed, low-thrust end of the angular contact range: the load line sits close to the radial plane, which keeps ball centrifugal and gyroscopic effects manageable at speed and gives high radial stiffness, and carries less axial load than a 25° or 40° angle in the same envelope. The phenolic cage reinforces that bias — it is light, it holds oil in its own structure, and it runs quiet at speed where a steel or brass cage would not. Universal grinding with a light preload group means the preload is built into the ground faces, so any two or more bearings of the designation clamp together back-to-back, face-to-face or in tandem without a measured shim stack.

Load and speed data

Basic dynamic load rating is 23.1 kN. Basic static load rating is 10.4 kN. Fatigue limit load is 1.07 kN. Reference speed is 38,000 rpm and the limiting speed rating is 24,000 rpm.

Quantity and configuration

1 Pc. One single bearing, one row, universally ground. It runs alone as a bearing located in one axial direction, or as a member of a ground stack built from further bearings of the same designation and preload group.

Fitting notes

Mounting is done clean, with force applied only to the ring being fitted and the rings clamped square against ground shoulders. In a duplex or tandem stack the marked faces are indexed together in the arrangement chosen. Oil-air, oil-mist or a metered grease charge suits the open faces; the phenolic cage tolerates oil-air feed at the top of the speed range. Seats are ground to matching tolerance for P4S accuracy to reach the tool.

Interchange guidance

The current FAG designation for this bearing is B7206-C-T-P4S-UL, the same 30 x 62 x 16 mm envelope with the phenolic cage code written as T. Same-spec 15° super-precision equivalents on the envelope include SKF 7206 CD/P4A and the Timken/Fafnir 2MM206WI family. A 7206-B is a related size with a 40° contact angle, a 7206-E-2RSD is the sealed variant, and a UM or UA suffix marks medium or universal preload instead of light — each changes thrust capacity, speed or stiffness, so they are related sizes rather than direct substitutions.