Bronze Lead Screw Spindle Nuts. These metric acme spindle nuts move the backgauge sledge on many of the larger size Polar guillotine paper cutters, such as on some of the Polar 115, Polar 137, and Polar 155 paper cutters. (fixed side nut Polar part number 233573 and spring side nut Polar part number 234824) Original Polar part number 055510 for the set, or ZA3.055510.
They are sold as a pair. The price is for one pair, including the Buna-N O-ring.
For reference, these fit on the leadscrew with an outside diameter of 40 mm. Both nuts fit in the 60 mm diameter bore, in the front and back side, of the backgauge sledge. The moving sliding one on the front side (spring side) is 81 mm long. The stationary or fixed one on the back side (fixed nut) is 65 mm long.
These will fit some of the larger cutters, including but not limited to the following:
115 EMC MON (115 EMC 2) models after serial number 5431001
137 EMC MON (137 EMC 2) models after serial number 5441001
155 EMC MON (155 EMC 2) models after serial number 5421001
155 SD models after serial number 5821201
155 P models after serial number 5821201
Made in USA.
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