Lee Precision case sensor TR2548 for Pro 1000 press

Lee Precision TR2548 case sensor

The TR2548 is the case sensor for the Lee Pro 1000 progressive press. It is the component that detects the actual presence of a case in the shell plate and authorizes the release of the primer: without it, the press would feed primers even when the station is empty, spilling them into the priming assembly.

Its operation is described by Lee in its technical documentation: when the shell plate rotates one-third of a turn, the case triggers the case sensor, and only then does a primer slide onto the primer pin. The sensor mounts onto the shell plate carrier casting above the TR2443 tension finger, rotating on the TR2550 bushing, which should not be tightened, as the sensor must remain free to oscillate. Lee specifies one per press.

Main features

• Type: case presence sensor (case sensor)
• Function: authorizes primer release only when a case is in the station
• Quantity used: 1 per press
• Associated components: TR2443 tension finger, TR2549 sensor clip, TR2550 sensor bushing
• Lee code: TR2548

Recommended use

Replacement part for the Lee Pro 1000 progressive press in versions produced from 1984 to 2022; Lee catalogs it among the parts for the Pro 1000 carrier, code 90683.

Package contents

The case sensor only. The TR2550 bushing, TR2549 clip, TR2443 tension finger, and mounting screw are not included.

Manufacturer code: TR2548