NTN7010CDBGHUP2Angular Contact Ball Bearing – 50 mm ID, 80 mm OD, 16 mm Width, 15° Contact Angle, ABEC 9, Heavy Preload, Back-to-Back Pair

Product Description

What this part is:

NTN 7010CDBGHUP2 is a matched pair of super-precision single-row angular contact ball bearings in the ISO 7010 size, ground for back-to-back mounting with Heavy preload. Bore Diameter: 50 mm. Outside Diameter: 80 mm. Width: 16 mm per bearing. Total Width: 32 mm as a DB pair. Contact Angle: 15°. Preload: Heavy. Precision Class: ABEC 9 / P2.

Decoding the designation:

7010 — NTN single-row angular contact ball bearing, 70 series, 50 mm bore.

C — 15° contact angle.

DB — back-to-back matched pair. Two single-row bearings ground as a set. Not a double-row bearing.

GH — Heavy preload.

UP — NTN ultra-high precision execution.

P2 — ISO tolerance class 2, equivalent to ABEC 9.

What these specs mean in practice:

The 15° angle favours radial stiffness and high speed. Back-to-back mounting takes axial load in both directions with high tilting stiffness. Heavy preload maximises rigidity for machine-tool spindles running at moderate speed. ABEC 9 is the tightest standard running-accuracy grade.

Mounting data:

Fillet Radius r min: 1.0 mm. Fillet Radius r1 min: 0.6 mm. Effective Load Centre a: 16.5 mm per bearing. Shaft Abutment da min: 55.5 mm. Housing Abutment Da max: 74.5 mm.

Quantity and configuration:

Unit Quantity: 2 Pcs. One DB matched pair. Mounting Arrangement: Back-to-back (DB). Carton marking: 2MMV9110 WI CR DBH.

Interchange guidance:

Fafnir 2MMV9110WI CR DBH is a 15° back-to-back heavy-preload pair in the 50 x 80 x 16 mm size; its MMV class is ABEC 7 dimensional with ABEC 9 running accuracy. Check the class before substituting.