NSK6813ZZDeep Groove Ball Bearing — 65 mm Bore, 85 mm OD, 10 mm Width, Thin Section, Steel Shields Both Sides

Product Description

What this part is

NSK 6813ZZ single-row thin-section deep groove ball bearing with steel shields on both sides. Bore Diameter: 65 mm. Outside Diameter: 85 mm. Overall Width: 10 mm. Rolling Elements: Ball. Number Of Rows: 1. Closure Type: Shields both sides. The 68 extra-thin series holds a 10 mm cross-section on a 65 mm bore, which keeps radial build-up to a minimum where a large shaft has to pass through a shallow housing.

Decoding the designation

6813 — ISO deep groove ball size in the 68 extra-thin dimension series, 65 mm bore, 85 mm outside diameter, 10 mm width. The same size appears in full ISO form as 61813.

ZZ — pressed steel shields on both sides. The shields run with a close non-rubbing gap to the inner ring, retaining grease and excluding coarse debris without adding seal drag.

What these specs mean in practice

Dynamic Load Rating: 13,100 N (2,945 lbf). Static Load Rating: 12,100 N (2,720 lbf). Limiting Speed: 7,500 rpm grease. Item Weight: 0.128 kg (0.282 lb). Cage Material: Pressed steel. Internal Clearance: CN. Lubricant: grease. Ball complement: 23 balls of 5.556 mm diameter. Bearing chamfer r min: 0.6 mm. The 23-ball complement spreads radial load across many small contacts, which is what gives a section this thin a useful dynamic rating.

Mounting data

Shaft abutment diameter da: 69 mm. Housing abutment diameter Da max: 81 mm. Maximum abutment fillet radius ra: 0.6 mm.

Quantity and configuration

Unit Quantity: 1 Pc. Number Of Rows: 1.

Interchange guidance

The 6813 / 61813 shielded envelope is shared by SKF 61813-2Z, FAG 61813-2Z, NTN 6813ZZ, Koyo 6813ZZ and NACHI 6813ZZ. The 6813 open execution takes the same envelope without the shields.