Barden110HDLAngular Contact Ball Bearing — 50 mm ID, 80 mm OD, 16 mm Width, 15° Contact Angle, ABEC 7 / P4S, Light Preload

Product Description

What this part is

The Barden 110HDL is a matched pair of super precision angular contact ball bearings from the Barden metric H spindle series. Each bearing measures 50 mm bore, 80 mm outside diameter and 16 mm width, with a 15° contact angle and ABEC 7 / P4S precision. The design is non-separable with a relieved outer ring and a one-piece phenolic halo cage, built for machine tool and grinding spindles.

Decoding the designation

110 — Barden base number in the 100 series; the last two digits (10) are the bore code, 50 mm bore.

H — Metric series spindle/turbine angular contact bearing, non-separable, relieved outer ring, with a reinforced one-piece phenolic halo cage.

D — Universal mounting: inner and outer rings of the same width, so the bearings install back-to-back (DB), face-to-face (DF) or tandem (DT).

L — Light preload. No numerals follow, which in Barden nomenclature denotes standard preload, 155 N for this size.

What these specs mean in practice

Bore Diameter: 50 mm. Outside Diameter: 80 mm. Overall Width: 16 mm per bearing. The envelope matches ISO 7010C-size bearings, so it fits shafts and housings machined for that size.

Contact Angle: 15°. The shallow angle favors high speed and radial stiffness over maximum thrust capacity.

Dynamic load rating: 28,617 N. Static load rating: 26,311 N. These per-bearing figures set fatigue life and the limit for permanent raceway deformation.

Limiting Speed: 18,000 rpm with grease; 28,000 rpm with oil. Oil lubrication raises the speed ceiling for high-speed spindles.

Preload: Light (L), 155 N standard preload. Barden’s range for this size is Light 155 N, Medium 375 N, Heavy 755 N; light preload balances spindle stiffness against heat generation.

Cage Material: Phenolic, one-piece halo, outer ring guided. The lightweight cage runs cool at spindle speeds.

Precision Class: ABEC 7 / P4S. Barden P4S means ABEC 7 nominal tolerances with ABEC 9 running accuracy, for low runout at the spindle nose.

Bearing Material: 100Cr6 (SAE 52100) chrome steel rings with steel balls. This is the standard through-hardened bearing steel for precision spindles.

Mounting data

Maximum fillet radius r1: 1.00 mm. Maximum fillet radius r2 on the non-thrust side: 0.50 mm.

Quantity and configuration

This listing is a universal duplex set of 2 bearings (D). Both bearings carry matched ring widths and the light standard preload, and the pair mounts DB, DF or DT.

Interchange guidance

Same envelope, 15° super precision equivalents: FAG B7010C.T.P4S, SKF 7010 CD/P4A, NSK 7010C P4 and Timken Fafnir 2MM9110WI. Barden lists the FAG B7xxxC.T.P4S series as the FAG equivalent of its H series.