MRC1907RDBAngular Contact Ball Bearing Duplex Set – 35 mm ID, 55 mm OD, 10 mm Width, Straight Bore, Open, 15 Degree, Back-to-Back, Extra-Light 719 Series

Product Description

What this part is:

MRC 1907 R-DB angular contact ball bearing set, mounted back-to-back, 35 x 55 x 10 mm. One matched duplex set, ground as a unit and supplied together, open both faces, straight bore. Unit Quantity: 1 matched duplex set.

Decoding the designation:

19 — MRC 1900 extra-light block, matching the ISO 719 dimension series, the thinnest standard angular contact section.

07 — bore code giving Bore Diameter: 35 mm.

R — R-type execution, counterbored outer ring, Contact Angle: 15°.

DB — back-to-back duplex arrangement, the two contact lines diverging outward from the shaft axis.

Specifications:

Bearing Type: Angular contact ball bearing. Bore Diameter: 35 mm. Outside Diameter: 55 mm. Overall Width: 10 mm per bearing. Total Width: 20 mm as a mounted pair. Contact Angle: 15°. Bore Type: Straight, counterbored outer ring. Closure Type: Open, both faces. Number Of Rows: 1 per bearing. Rolling Elements: Ball. Series: MRC 1900 extra-light, ISO 719 dimension series. Mounting Arrangement: Back-to-back (DB). Country of Origin: United States.

Dimensions and mounting:

A 35 mm shaft takes a 55 mm housing bore and 10 mm of axial length per bearing. The two rings are marked across the outer ring faces for the orientation the grinding was made for. Back-to-back mounting: the diverging load lines give a wide effective load span and high resistance to moment loads and shaft tilting. Each bearing carries thrust in one direction; the opposed pair carries thrust both ways.

Compatibility and replacement:

Cross-Reference 1: SKF 71907 CD, 15° single bearing. Cross-Reference 2: FAG B71907-C, 15° single bearing. Cross-Reference 3: NSK 7907C, 15° single bearing. A 71907 ACD or NSK 7907A5 shares the same seats at 25° and is a related size, because the angle changes both the thrust rating and the stiffness of the mounted pair. Searchable designation forms: 1907RDB, 1907-R-DB, 1907 R DB, 1907R, 71907 and 7907.

Frequently asked questions:

What size is the MRC 1907RDB?

Bore Diameter: 35 mm. Outside Diameter: 55 mm. Overall Width: 10 mm per bearing, 20 mm as a mounted pair.

What contact angle does it have?

Contact Angle: 15°, set by the R in the designation.

What does DB mean?

DB is a back-to-back duplex arrangement, the two contact lines diverging outward from the shaft axis.