Honeywell 30756150-001 Chart Hub Kit for Circular Chart Recorders
Chart hub kit for Honeywell DR4200, DR4300, and DR4500 (Classic and Truline) circular chart recorders. Kit includes one large diameter hub, one small diameter hub, one tamper-proof hub, one compression spring, and one Allen wrench.
Use small diameter hub with ink pens and preprinted charts that have a center hole. To install, push hub onto motor shaft. Otherwise, use the standard hub on DR4200, DR4300, and DR4500 recorders.
Use the tamper-proof hub with ink pens and preprinted charts when approval bodies or process inspectors require tamper-proof operation. To install, slide the hub down to the bottom of the motor shaft and tighten the set screw.