SKF6019/C3Open Deep Groove Ball Bearing 95 x 145 x 24 mm, C3 Greater Clearance, Single Row, 1 Pc

Product Description

What this part is

A single-row deep groove ball bearing, 95 mm bore by 145 mm outside diameter by 24 mm wide, open on both sides, with C3 greater-than-normal radial internal clearance. Deep groove ball bearings carry radial load plus axial load in either direction. The open C3 combination is the classic electric motor, gearbox and fan-shaft specification for anything that runs warm.

Decoding the designation

6 – single-row deep groove ball bearing0 – dimension series 60, the light section for this bore19 – bore code, 19 x 5 = 95 mm bore/C3 – radial internal clearance greater than normalNo closure suffix – open both sides; a 2Z would be steel shields, a 2RS1 contact rubber seals

What these specs mean in practice

C3 is the spec that decides this sale. It leaves more room between balls and races than a standard CN bearing, which is exactly what you need when the inner ring goes on with a tight interference fit, when the shaft runs appreciably hotter than the housing, or when both. Fit a CN bearing in that duty and thermal growth eats the clearance, preloads the bearing and cooks it. Fit a C3 into a cool, lightly loaded machine and you can get extra noise and ball skidding instead. It is a mismatch that fails in both directions — match what came out, and if the old bearing was marked C3, buy C3.

Because it is open, the bearing arrives without service grease. It needs lubricating on assembly and sealing by the housing, and it is not a substitute for a 6019-2Z or 6019-2RS1, which arrive pre-greased and closed. In return it relubricates freely and runs in circulating or splash oil.

Published specifications

Bore: 95 mmOutside diameter: 145 mmWidth: 24 mmRows: 1Closure: open, both sidesInternal clearance: C3, greater than normalMaterial: through-hardened bearing steelEAN: 7316576628436

Quantity and configuration

Sold as 1 piece, one open bearing. No shields, no seals, no snap ring, no housing.

Fitting notes

At 95 mm bore, heat mounting to about 80 to 100 °C is easier and kinder than a cold press. Load only the ring being fitted, never across the balls. For a rotating inner ring under normal load, k5 or k6 on the shaft with an H7 housing bore is the usual pairing — and C3 is chosen precisely so that fit does not squeeze the clearance out. Grease to roughly a third of the free internal space, or rely on the housing oil.

Interchange guidance

Genuine interchanges are same-envelope open 95 x 145 x 24 mm bearings with C3 clearance: FAG 6019-C3, NSK 6019C3, NTN 6019C3, Koyo 6019C3 and Nachi 6019C3. A plain 6019 (normal clearance) or a 6019/C2 (tighter) is a different clearance class, and a 6019-2Z or 6019-2RS1 a different closure — related parts, not drop-in equivalents. A 6219 or 6319 of the same bore is a heavier series and a physically larger bearing.