NTN7010CDB/GNP4Angular Contact Ball Bearing, Back-to-Back Pair, 50 mm ID, 80 mm OD, 16 mm Width, 15° Contact Angle, Normal Preload, ISO Class 4

Product Description

What this part is:

NTN 7010CDB/GNP4 is a super-precision angular contact ball bearing set: two single-row bearings ground as a back-to-back (DB) pair. Bore Diameter: 50 mm. Outside Diameter: 80 mm. Width: 16 mm per bearing, 32 mm across the pair. Contact Angle: 15°. Cage: glass-fibre reinforced nylon. Enclosure: open. Unit Quantity: 2 Pcs. Country of Origin: Japan.

Decoding the designation:

7010 — ISO 70 dimension series, 50 mm bore.

C — 15° contact angle.

DB — two bearings ground as a back-to-back pair, outer rings meeting at their wide faces.

GN — NTN normal preload.

P4 — ISO tolerance class 4, equivalent to ABEC 7.

Specifications:

Limiting Speed: 14,400 rpm grease; 23,040 rpm oil. Dynamic Load Rating: 43,700 N for the set. Static Load Rating: 46,200 N for the set. Precision Class: ISO Class 4 / ABEC 7. Preload: Normal. Bearing Material: High carbon chrome steel. Ball Material: Steel. Operating Temperature Range: -40 to 120 °C. Radial internal clearance: not applicable to a preloaded set.

Dimensions and mounting:

Shaft shoulder diameter da: 55.5 mm min. Housing shoulder diameter Da: 74.5 mm max. Housing shoulder diameter Db: 75.5 mm max. Ring chamfer r: 1.0 mm min. Ring chamfer r1: 0.6 mm min. Maximum fillet ras: 1.0 mm. Maximum fillet r1as: 0.6 mm. Inner ring shoulder d1: 60.3 mm. Outer ring shoulder D1: 69.7 mm.

Compatibility and replacement:

Cross-references: Fafnir 2MM9110WI CR DB; FAG B7010-C-T-P4S-DB (phenolic cage); SKF 7010 CD/P4ADBA; SKF 7010 CD/P4A (single bearing); NSK 7010CTYNSULP4 (single bearing, polyamide cage); NTN 7010CDBGMP4 (medium preload); NTN 7010CDBGLP4 (light preload).

Frequently asked questions:

What size is the NTN 7010CDB/GNP4?

50 mm bore, 80 mm outside diameter and 16 mm width per bearing, 32 mm across the back-to-back pair.

What do GN and P4 mean in 7010CDB/GNP4?

GN is NTN normal preload for the DB pair. P4 is ISO tolerance class 4, equivalent to ABEC 7.

What is the limiting speed of the NTN 7010CDB/GNP4?

14,400 rpm with grease and 23,040 rpm with oil.