FAG6218MP5Deep Groove Ball Bearing 90 x 160 x 30 mm, Metal Shields Both Sides, P6 Tolerance, C3 Clearance

Product Description

What this part is

A FAG 6218-ZZ-C3-P6 single-row deep groove ball bearing — 90 mm bore, 160 mm outside diameter, 30 mm wide, with metal shields on both faces, C3 internal clearance and P6 tolerance class.

Decoding the designation

6218 — single-row deep groove ball, ISO 62 light series, 90 mm bore
ZZ — metal shield on each face, non-contact; the doubled letter means both sides
C3 — radial internal clearance greater than normal
P6 — ISO tolerance class 6, approximately ABEC 3
P63 — FAG’s combined code for exactly this pairing of P6 tolerance and C3 clearance

What these specs mean in practice

A deep groove ball takes radial load with moderate thrust either way and runs faster than any roller type of the same size. A metal shield is non-contact: it keeps solid debris out and grease in without rubbing the inner ring, so it adds almost no drag and does not cap the speed the way a contact seal does, but it will not hold back water or fine dust. C3 clearance leaves running room for thermal growth and for the interference of a press fit, which is why it is paired with the tighter P6 tolerance here — P6 controls the ring dimensions and running accuracy, C3 controls the internal play, and the two are set independently.

Published specifications

Bore: 90 mm
Outside diameter: 160 mm
Width: 30 mm
Rows: 1
Rolling element: ball
Closure: metal shield on both faces (non-contact)
Internal clearance: C3, greater than normal
Tolerance class: P6 (ISO class 6, approximately ABEC 3)
Combined FAG code: P63
Axial capacity: both directions, moderate

Quantity and configuration

1 Pc. Complete bearing — inner ring, outer ring, ball complement, cage and two metal shields.

Interchange guidance

The ISO base number is 6218 and the shielded form reads 6218-2Z: SKF 6218-2Z/C3, NSK 6218ZZC3 and NTN 6218ZZC3 are the same 90 × 160 × 30 mm size with non-contact shields both faces. A 6218-2RSR or 6218DDU is contact-sealed, not shielded, so it is a related size with a different speed limit and drag rather than an equivalent. A standard-tolerance 6218-2Z-C3 without P6 is a looser dimensional grade, and a single 6218-Z has one shield with the opposite face open.