Textar has launched a conical adapter ring set to help improve runout measurements when working on vehicles.
Textar’s new conical adapter rings serve as both spacers and holders for the wheel bolt collar.
To prevent brake judder, Textar says every brake repair should include a check if the runout of the brake disc is within the vehicle manufacturer’s tolerances.
It warns that even deviations as small as 0.05mm can lead to vibrations that cause noise and/or brake judder.
Measurement errors are often the reason for this and even the most precise runout gauge cannot provide accurate values if the disc behaves differently during measurement and driving.
Thomas Beier, junior product manager at TMD Friction, said: “During our test series with our adapter rings, we found that when the brake disc is bolted crosswise and a torque of 80 Nm is applied, meaningful measurement values are obtained,”
“During measurement, the brake disc then behaves as if it were being held by the wheel.
“It’s an efficient option that garages can use to offer the highest level of assembly quality.”
If the wheel bolts are screwed in without the rim, they are almost always too long to provide a firm hold.
Garages often use nuts as spacers but this solution has two disadvantages: firstly, most wheel bolts have a conical collar so a uniform holding force cannot be applied even when tightened crosswise and, secondly, the contact surface of the disc bell can be damaged when using steel nuts.
The first of these two disadvantages in particular can be enough to provide an unrealistic measurement result with low tolerances.
The stainless steel Textar adapter rings are offered as a set of ten rings.
A complete axle can be measured using these rings and a precise runout gauge is also available.
A detailed description can be found online in the Textar Brakebook, by clicking ‘more details’ below.