YDTech® manufacturer of fixed center point FFBR / FBSR driving pins for face clamping,turning, milling! supplier of custon fixed center point FFB / FFBH, FFP face drive pins on workholding for drilling, grinding.
in precision turning and grinding, the workpiece must rotate around a stable, repeatable axis. This is why fixed center point face drivers are preferred for demanding applications such as hard turning, fine grinding, and gear machining. Unlike floating center designs, a fixed center point remains stationary during clamping, establishing an exact rotational datum. The drive pins—often floating or hydraulically compensated—engage the workpiece end face while the center point never moves.
The term “fixed center point drive pin” refers to the combination of a fixed, non-retracting center point and the surrounding drive pins that transmit torque. The center point locates the workpiece precisely. The drive pins (floating, hydraulic, or power-operated) clamp the end face. Because the center point does not retract or float, it maintains a constant reference. This eliminates axial position errors and ensures that length dimensions remain consistent from part to part.
Series of face driver for Fixed Center Point Drive Pins
| Series | Technical Advantages | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| FFB / FFBH | Fixed center point design. Runout accuracy of 0.001–0.01 mm. FFBH uses hydraulic-compensated drive pins with even better runout (0.002–0.005 mm) | ||||||||||
| FFP | Similar to FFB/FFBH. Designed for hard turning and other high-precision applications with a fixed center point. | ||||||||||
| FFBR / FBSR | Power-operated drivers for precision grinding. Fixed centering point combined with retractable drive pins for easy workpiece loading/unloading. | ||||||||||
FDT-4 face driver drive pins, lathe face drivers, drive pins, changeable driving pins, drive teeth pins
| drive pins (quantity) | drive pins (diameter) | face drivers (diameter) | face drivers bodies | screws | center pins | FD technologies | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 8 | 160 | 70 | 3 | 6.25 | FD 2023 | |||||
| 3 | 10 | 160 | 70 | 3 | 6.5 | FD 2023Z | |||||
| 3 | 10 | 160 | 70 | 3 | 8.5 | FD 2023F | |||||
| 5 | 15 | 160 | 90 | 3 | 12.5 | FD 2023D | |||||
| 5 | 15 | 160 | 100 | 3 | 12.5 | FD 2023GR | |||||
| 5 | 20 | 160 | 132 | 3 | 12.5 | FD 2023RED | |||||
FFB / FFBH series: These are fixed center point drivers. The center point does not move during clamping, achieving runout accuracy between 0.001–0.01 mm. The FFBH variant adds hydraulic drive pin compensation, improving runout to 0.002–0.005 mm while keeping the center fixed. These drivers excel in high-speed turning and grinding.
FFP series: Similar to FFB/FFBH, the FFP series is designed for hard turning of hardened steels (up to 70 HRC). The fixed center point provides the rigidity needed for interrupted cuts on heat-treated workpieces.
FFBR / FBSR series: These are power-operated face drivers specifically for precision grinding. They combine a fixed locating center point with retractable drive pins for easy workpiece loading and unloading. The fixed center ensures exceptional concentricity during grinding cycles.
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