RHP7201TULP4Super Precision Angular Contact Ball Bearing – 12 mm ID, 32 mm OD, 10 mm Width, P4 / ABEC 7, Laminated Phenolic Cage, Light Preload, Universally Matchable

Product Description

What this part is

RHP 7201TULP4 is a single-row super precision angular contact ball bearing with a 12 mm bore, 32 mm outside diameter and 10 mm width. Series: 7200 (ISO dimension series 02). Base Number: 7201. Precision Class: P4, equivalent to ABEC 7 and ISO Class 4. Cage Material: laminated phenolic resin, outer-ring guided. Bore Type: straight. Closure: open on both faces.

Decoding the designation

Precision Class: P4 – ABEC 7 – ISO Class 4. Preload: light. Matching: universally matchable, so face steps are pre-adjusted at manufacture and no custom spacer is needed to reach the set preload. Cage: outer-ring-guided laminated phenolic resin. Contact Angle: Not specified. Searchable forms of the designation include 7201TULP4, 7201 T UL P4, 7201-T-DUL-P4, B7201TADULEP7 and MM201WI CR DUL.

What these specs mean in practice

P4 precision holds inner-ring radial runout to 2.5 µm and mean bore deviation to 4 µm at this bore size, which gives closer shaft location and lower running vibration than a normal-class bearing. An outer-ring-guided laminated phenolic cage runs quietly and suits high spindle speeds. Maximum recommended operating temperature for a laminated phenolic cage is 120 °C. Rings and balls are high carbon chrome bearing steel to SAE 52100, through hardened and heat treated for dimensional stability.

Preload and matching

Preload: light, which is the level chosen for most spindle applications where loads and speeds are not extreme. Universal face control means the bearing mounts back-to-back or face-to-face at the same preload value, and shares load equally in tandem. Preload and radial internal clearance are mutually exclusive, so Internal Clearance is N/A.

Quantity and configuration

Unit Quantity: 1 Pc.

Mounting data

Shaft abutment diameter d1: 17 mm minimum. Housing abutment diameter D1: 27 mm maximum. D2: 29.5 mm maximum. Chamfer r: 0.6 mm minimum. Chamfer r1: 0.3 mm minimum. Internal volume: 1.7 cm³, which sets the grease charge – 30 percent of internal volume at low and medium spindle speeds, 20 percent at higher speeds. Pitch circle diameter for lubrication jets: 19.6 mm. Mass: 0.036 kg.

Interchange guidance

RHP publishes this envelope as 7201C at 15° and 7201A5 at 25°. SKF 7201 CD/P4 and NSK 7201C P4 are 15° bearings in the same 12 x 32 x 10 mm envelope and are related sizes. MM201WI CR DUL is the Fafnir designation carried on the same carton.

Country of origin

Country of Origin: United Kingdom. Marked Made In England.