Fidelity Designs LTD

Sub-platter upgrades

Replace your plastic sub-platter with a 6082 alloy unit to improve speed stability and the looks of your turntable.


Description of the alloy subplatter upgrades.

Posted on by Ben Lamb -

Sub-platter upgrade for Rega Planar 2, 3, P25, P78 & Rega P2, P3, Rega P3-24, please note the bearing/sub-platter upgrade is not suitable for the RP1/P1 due to the fact that they use a small 12mm standard bearing. The bearing/sub-platter upgrade will also not fit newer 2016/2017 Rega designs due to the fact that they use a new bearing that is screwed directly into the plinth, this design can be recognised as it has two holes drilled into the top and no nut underneath. The RP3/RP6 also use a different housing which is 1mm larger in diameter on the upper portion, these types of housing use the alloy brace between the bearing and tonearm. In conclusion you need the 18mm brass sleeve and nut design to use this upgrade. The standard sub-platter upgrade is suitable for the RP1/P1 and the newer 2016/2017 designs.

Bearings are now using Ketron PEEK liners which has increased costs slightly but has taken the bearing to new levels of performance.

The sub-platter is machined from 6082 alloy billet with a precision 316L grade stainless steel spindle, which is the highest grade available. A longer than standard record spindle allows the fitting of record clamps or thicker platters to your turntable. Further performance can be gained by using the sub-platter and bearing kit. This uses a 316L stainless shaft with a silicon nitride ball running on a Ketron PEEK thrust plate, the two Ketron PEEK bearing liners at the top and bottom are separated by an oil gap. This enables the ultimate in quiet running bearings with better lubrication and less friction. The sub-platters shaft displaces most of the air or oil in the bearing sleeve so only a small amount of oil is needed. Filling the sleeve with oil and forcing the shaft in can cause problems. It is best to start with about eight to nine drops and allow the air to escape by carefully pushing down on the sub-platter while turning it one way then the other. The the oil will fill the void between the liners.

An updated version of the sub-platter bearing is now available which allows the sub-platter to be used in the standard or upgraded bearing liner. This version is different in that the Silicon Nitride ball is fixed at the bottom and the shaft rotates on top of it. Performance is excellent and it makes swapping parts easier.

Sub-platters are also available for the RP6 which allow the use of multi belt pulleys and a sub-platter/bearing is now available for the RP6.

New reference sub-platter for Rega with PEEK thrustpad and silicon ring center boss.

Older version of the sub-platter/bearing

High end platter/sub-platter/bearing upgrade for Rega.

The cost for a standard 6082 sub-platter for Rega is £49, Reference version £59 and the new PEEK sub-platter bearing kit is £89. An RP6 version of the sub-platter is available for £66.

Contact me at to order and payment is usually via a Paypal invoice.

A sub-platter upgrade can replace a vital part of your turntable with a quality British engineered unit using the best materials.