FafnirJM9103KPrecision Spindle Deep Groove Ball Bearing – 17 mm Bore, 35 mm OD, 10 mm Width, ABEC 3 / P6, C1 Clearance

Product Description

What this part is

Fafnir JM9103K, a precision spindle deep groove ball bearing. Bore Diameter: 17 mm. Outside Diameter: 35 mm. Overall Width: 10 mm. Rolling Elements: Ball. Number Of Rows: 1. Bore Type: Straight. Closure Type: Open. Precision Class: ABEC 3 / P6. Internal Clearance: C1. Bearing Material: Chrome steel. Series: 9100K. Base Number: M9103K.

Decoding the designation

M — Fafnir precision spindle range at P6 tolerance, one class above standard.

9103 — the 9100 light dimension series, bore code 03, which maps to the ISO 6003 envelope: 17 mm bore, 35 mm outside diameter, 10 mm width.

K — spindle deep groove construction. Conrad-type raceways carry radial load and axial load from either direction, so the bearing has no contact angle.

C1 — internal clearance two grades tighter than normal.

FA51154 — the customer drawing reference marked on the parts.

What these specs mean in practice

Precision Class: ABEC 3 / P6 holds bore, outside diameter and running accuracy inside a tighter band than a standard 6003, which shows as lower runout and quieter running. Internal Clearance: C1 is the tightest of the common grades and gives the closest shaft location, which suits a light, high-accuracy spindle running at modest temperature rise.

Quantity and configuration

Unit Quantity: 3 Pcs. Three single-row bearings ship together. A deep groove spindle bearing is not preload-matched, so each piece stands alone.

Interchange guidance

The envelope is the ISO 6003 envelope, 17 x 35 x 10 mm. FAG 6003-P6, NSK 6003P6, NTN 6003P6 and Koyo 6003P6 are the direct tolerance-class equivalents. Timken MM9103K is the same geometry in the tighter P4S class. A standard-tolerance 6003 shares the envelope in a looser accuracy class. Searchable variants include JM9103K, JM-9103-K, J M 9103 K, M9103K, 9103K and FA51154.