New Product Announcements From: 10/15/2003 Modern Machine Shop The company announces its newest 10" face clamping chuck with a center-mounted 3" diaphragm. The 10" diameter chuck has adjustable operating pins and a center-mounted 3" diaphragm plate. This plate centers the workpiece before two contoured fingers swing into position to face clamp aluminum pump housings for distortion-free boring at 4,000 rpm, according to the company.