A 32 YEAR EMPLOYEE AND A 6 YEAR EMPLOYEE WERE SENT TO CHANGE A CARRIER WHEEL ON GRATED COOLER. THE WHEEL HAD A BAD BEARING AND WAS BEING REMOVED WHEN THE HAND OF THE YOUNGER EE BECAME PINCHED BETWEEN THE WHEEL AND A SPEED INDICATOR. THE YOUNGER EE THOUGHT THE WHEEL MIGHT FALL AND REACHED TO STEADY IT AND PLACED ONE HAND NEAR THE SPEED INDICATOR TO BRACE HIMSELF IT PINCHED HIM IMMED