951502 - ESAB Replacement Skirted Control Knob - 1/4 Inch Shaft

Technical Overview: ESAB 951502 Control Knob

The ESAB 951502 is a precision-molded replacement control knob designed specifically for ESAB welding power sources and auxiliary equipment. The product designation "Knob Skrt 25S0 90Sd0 67H Pls" indicates its specific dimensional properties: it is engineered to interface with a 0.250-inch (6.35mm) potentiometer shaft ("25S0"), a standard size for industrial electronics. The "Skirted" design features a flared base with a diameter of 0.90 inches ("90Sd"), which serves to cover the mounting nut of the potentiometer and prevent the ingress of conductive dust into the control panel assembly.

Manufactured from high-density industrial plastic ("Pls"), this component provides necessary electrical isolation for the operator. The knob stands 0.67 inches high ("67H"), offering a low-profile form factor that minimizes the risk of accidental impact damage while remaining accessible for adjustment. The internal molding is designed to grip the shaft securely, preventing slippage during operation. This part is essential for maintaining the accuracy of variable inputs such as voltage, wire feed speed, and inductance on compatible ESAB machinery.

Using genuine OEM parts like the 951502 ensures that the pointer alignment (if applicable) and rotational feel match the manufacturer's original specifications. Generic knobs often lack the correct skirt diameter or shaft depth, leading to fitment issues or gaps that allow debris to enter the machine enclosure. This component is a direct replacement for worn, cracked, or lost knobs on various ESAB models.