YDTech® manufacturer of drive dog(top) pins on face drivers for self centering chuck, suit turning, milling! supplier of center jaw pins for face driving dead chucks, grinding, gear cutting, turning,gear cutting in china.

drive pins made of hardened hss with chisel are used for machining soft work pieces. these are characterized by a high resistance to wear and tear and a maximum torque transmission. we only produce drive pins, needle roller pins,custom your drawings not face drivers.

these face drivers are power-operated by the thrust of the tailstock. work pieces are clamped centrically using a movable center pin. this way different centerings can be adjusted, thus ensuring a constant datumpoint at the face end of the work piece.

face driving is a simple two step clamping operation, centering followed by clamping. under tailstock pressure, the workpiece engages the center point which locates the part and provides a consistent axis of rotation. as the tailstock continues to drive the workpiece against the center point, the axial pressure forces the spring-loaded center point back into the carrier body until the drive pins engage the face of the workpiece.

ever increasing demands on the manufacturer to improve productivity and quality have led to the need for faster machining techniques. face drivers, along with todays new high performance equipment, let you maximize your production capabilities for minimal expense.

drive pins and center pins of special design for various work piece surfaces and clamping conditions we design and manufacture a variety of drive pins and center pins of special design

FDT-4 face driver drive pins, lathe face drivers, drive pins, changeable driving pins, drive teeth pins

the first cut should generally be towards the face driver to better set the workpiece and allow the drive pins to do their work by biting into it. once the first cut is made towards the face driver, then cuts toward the tailstock can be made. grinding and hard turning

a face driver has two main components, the drive head and the mounting. the mounting locates the driver in the machine with either a morse taper shank mount directly into the machine taper; or a chuck mount chucked between special chuck jaws; or a flange mount bolted to a spindle adapter on the machine spindle. the illustration shows a morse taper shank. the drive head contains the compensating medium ; which allows the pins to adjust to variations in the locating face and the spring-loaded center point.

with a mechanical tailstock, the average tightening with one hand exerts sufficient force to build up about 1,700 pounds of pressure. on a power-operated tailstock, force equals the area of the piston in square inches times the input pressure into the cylinder in pounds per square inch.

on live (dead) centers, the face driver is typically only as good as the tailstock center. carbide-tipped centers work well in hard turning and grinding applications. choose a tailstock center designed to minimize runout error, withstand high axial and radial loads, and require little maintenance.