Bronze Lead Screw Spindle Nuts. These metric acme spindle nuts move the backgauge sledge on the Polar 76 SD, 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 original and un-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.
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To complete your return, we require a receipt or proof of purchase.
Customized products and gift cards are exempt from being returned.
Heidelberg OEM Parts are subject to re Stocking fees.
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 30 days.
Late or missing refunds
- If you haven’t received a refund yet, first check your bank account again.
- Then contact your credit card company, it may take some time before your refund is officially posted.
- Next contact your bank. There is often some processing time before a refund is posted.
- If you’ve done all of this and you still have not received your refund yet, please contact us at