Tornado Bearing Set K28890760

The bearing set (part# K28890760) is the genuine Tacony bearing pack that carries the vacuum motor shaft inside the motor housing on Tornado’s dual-motor HEPA uprights. Tacony catalogues it as a set because the bearings are replaced in pairs — fitting one new bearing against one worn one puts the shaft out of true and the new bearing follows the old one down.

This is a genuine Tacony OEM part. It sits on the front part assembly, the sheet shared by the 15-inch and 19-inch dual-motor machines, so one part number serves all four.

Compatible Models for the Bearing Set K28890760

• Tornado CV 38/2 (91415) — 15-inch dual motor HEPA
• Tornado CV 48/2 (91419) — 19-inch dual motor HEPA
• Tornado CVD 38/2 (91440) — 15-inch dual motor HEPA
• Tornado CVD 48/2 (91442) — 19-inch dual motor HEPA

All four are the dual-motor HEPA machines in the CV/CVD range. The single-motor CVD 30, CVD 38 and CV 38 use a different motor assembly and do not take this set.

What the bearing set does

The bearings locate the motor shaft and let it spin with almost no friction while holding it dead straight under load. Everything the suction motor does — the airflow figure, the noise level, the current it draws — depends on that shaft running true. As the bearings wear, the shaft develops play, the impeller runs slightly off-centre, and the motor works harder to move less air.

Signs it needs replacing

A rising whine or growl that changes pitch with the motor rather than with the brush roll is the classic symptom, and it usually gets worse as the machine warms up. A rhythmic rumble, a motor that runs noticeably hotter than it used to, or suction that has dropped with a fresh bag and a clean HEPA element all point the same way. Left long enough a failed bearing will take the motor with it, which is why the bearing set is the cheaper repair by a wide margin.

Installation and fit

This is a motor-out job. The vacuum motor and housing come out as an assembly, the old bearings are pressed off the shaft and the new ones pressed on square — not tapped on, which brinells the races and ruins a new bearing before it turns. If you are not set up to press bearings, bring the machine in; we do this repair regularly.

Frequently Asked Questions

Why is it sold as a set rather than a single bearing?

Because the bearings support the same shaft. Replacing one and leaving the other means the worn bearing keeps the shaft slightly out of true and the new one wears quickly. Tacony catalogues the pair as one part number for that reason.

Does this fit the single-motor CVD 30 or CVD 38?

No. PartSmart lists K28890760 against the four dual-motor HEPA machines only — CV 38/2, CV 48/2, CVD 38/2 and CVD 48/2. The single-motor uprights use a different vacuum motor assembly.

Is the bearing set the same on the 15-inch and 19-inch machines?

Yes. The width difference between these machines is entirely in the brush head. The vacuum motor and its bearings are identical on both.

Can I fit it myself?

Only with a press. The bearings have to go onto the shaft square and under even pressure; driving them on with a hammer damages the races. Call 763-535-0770 if you would rather we did it.