Lead Screw Spindle Nuts for Polar backgauge, 233577 and 233305
- Our Part Number: A727
Backgauge Lead Screw Spindle Nuts
These bonze metric acme spindle nuts move the backgauge sledge on the Polar 76 SD and Polar 76 EM, after serial number 5208001, and on the Polar 92 EMC 2 cutters after serial number 5101601, and on the Polar 92 EMC MON cutters after serial number 5411001. (The rear fixed side nut is Polar part number 233577. The front spring side nut is Polar part number 233305.) Original Polar part number was 231745 or 231118 for the set.
These leadscrew nuts are NOS (new old stock) original and never used Heidelberg parts.
They are sold as a pair. The price is for one pair, including the Buna-N O-ring (original Polar part number 218273).
For reference, these fit on the leadscrew with an outside diameter of 35 mm. Both nuts fit in the 50 mm diameter bore, in the front and back side, of the backgauge sledge. The moving sliding one on the front side (spring side) is 60 mm long. The stationary or fixed one on the back side (the fixed nut with the flange) is 45 mm long.