Pro-Ject Adjust it Tonearm Bearing Adjustment Tool

Pro-Ject Adjust it — For a Bearing That Has Travelled Badly

A tonearm bearing adjustment tool, sold singly, that fits all Pro-Ject tonearms. It allows the arm bearing to be brought back to its correct tolerance when it has drifted out of true.

Shipping is what usually causes that. A turntable that has travelled without the arm secured can arrive with the bearing tightened or slackened, and neither state is one you can see — you hear it, as an arm that does not move quite freely.

Fit and Function

Why Bearing Tolerance Matters

A tonearm bearing has to let the arm move without resistance and without play. Too tight and the cartridge is fighting the bearing to follow a groove; too loose and the arm has freedom it was never meant to have. Both cost you tracking.

What It Fits

Pro-Ject states that it fits all Pro-Ject tonearms. Other makers use different bearing arrangements with their own adjustment methods and their own tools, so this is not a general-purpose instrument despite appearances.

What it restores is the smooth, unimpeded arm movement the design intends. That is a mechanical specification rather than a matter of taste — the arm either moves as designed or it does not.

Who Is Adjust it Best For?

• Your turntable arrived after a long journey — an unsecured arm in transit is the classic cause
• Your arm feels stiff or loose — both are bearing symptoms rather than balance ones
• You own any Pro-Ject tonearm — Pro-Ject states the tool fits all of them
• You are a dealer or technician — this is the tool for the job, used properly
• You are not confident with a tonearm bearing — we strongly recommend referring the job to a qualified Pro-Ject technician; the rest of the setup kit is in cartridge alignment tools

How Do You Use It?

Our recommendation, and it is a firm one: refer bearing adjustments to a qualified Pro-Ject repair technician. A tonearm bearing is a precision assembly, the adjustment window is small, and a bearing made worse is harder to recover than one left alone. The tool exists so that the job can be done correctly, not so that it becomes casual.

Pairs Well With

What most owners have alongside.

• Stylus force gauges — the setting to re-check after any change at the arm
• Cartridge alignment tools — the rest of the setup kit
• Test records — how you check the result
• Turntable parts and add-ons — the upgrade parts these support

Frequently Asked Questions

Will it fit my tonearm?

Pro-Ject states it fits all Pro-Ject tonearms. Arms from other makers use different bearing designs and their own adjustment tools.

How many do I need?

One, sold singly. It is a tool rather than a part, so it stays in the drawer between uses.

Should I adjust the bearing myself?

We strongly recommend referring bearing adjustments to a qualified Pro-Ject repair technician. The tool gives you the means; the judgement of how far to go is the harder half.

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