Polar Mohr Paper Cutter Manuals & Parts

Find the Exact Manual or Part for Your Polar Mohr Cutter

Find the exact manual or part for your Polar Mohr paper cutter. Operator manuals, parts diagrams, and blade specs for the full Polar 92 / 115 / 137 / 155 line, plus the Mohr 80E. Every document is a free PDF, no email gate, no signup wall.

If you came here to buy a machine instead, we have used Polar listings further down the page, and a sister page at Used Polar Paper Cutters when you are ready to shop.

Jump to: Parts diagrams  ·  Specs  ·  Service tips  ·  FAQ

Parts Diagrams and Part Lookup

The three assemblies that drive most Polar guillotine-cutter part searches:

Blade carriage assembly

The blade carriage carries the knife through the cut and is the assembly behind the most-searched Polar part: the blade itself. A Polar blade is replaced, not field-sharpened in place; blade length is matched to the model's cut width. Pre-2005 machines can use a different blade-carrier mount, so verify against the serial plate before ordering. The carriage also carries the knife bolts and the depth-stop hardware.

Side-clamp assembly

The clamp holds the paper lift while the knife cuts. On Polar cutters the clamp is hydraulically actuated; clamp-pressure loss and a worn clamp pad are the two failure modes operators reference most. The parts documentation identifies the clamp pad, the hydraulic seal kit, and the pressure-adjustment hardware.

Back-gauge assembly

The back-gauge sets cut position and is the assembly behind every "the cutter is off by a hair" complaint. Back-gauge drift is usually a spindle, drive-belt, or calibration issue. The parts documentation covers the spindle, the drive components, and the position-sensor hardware.

Need a specific part? Use the contact form with your model and serial number for a quote. Part-number lookup tables are added here as Polar parts catalogs are sourced into the manuals library above.

Polar Model Specs Comparison

Specs being verified. The figures below are sourced from Polar's official model spec sheets before publication; the table ships with the structure in place and is backfilled once each number is confirmed against the manufacturer sheet. We do not publish guessed specifications.

Service Tips and Maintenance Schedule

Operator-level service notes for Polar Mohr guillotine cutters. Always reference the relevant model's service manual before working inside the cabinet or pulling guards.

Daily maintenance

A Polar cutter rewards a short daily check at shift start. Confirm the air supply is at working pressure and that the air table raises the lift cleanly. Wipe the table and the back-gauge face so grit does not score the bed or throw off squareness. Check the cut stick: if the strike channel is deep enough that the blade is close to touching the bed, rotate or replace it before the first job. Confirm the two-hand controls and the light guard both function; a Polar will not cycle with a guard fault, and catching it at shift start beats catching it mid-run. Listen to the clamp on its first few strokes for even, repeatable pressure.

Blade changes

Blade life on a Polar is paper-grade dependent, not calendar dependent. A shop on uncoated offset stock runs a blade far longer than a shop on coated digital stock or heavy recycled paper. The signs a blade is due: a feathered or fuzzy cut edge, visible draw on the lift, or the operator leaning on the program to force a clean cut. Polar blades are replaced as a unit and sent out for sharpening; they are not honed in the machine. Follow the service manual for your model on bolt order and torque, use the blade-change handles rather than bare hands, and keep the lockout engaged until the new blade is seated and torqued.

Common failure modes

Three failure modes account for most Polar service calls. Back-gauge drift, where stored cut positions creep off true, usually traces to the drive belt, the spindle, or a calibration that needs re-zeroing. Clamp-pressure loss shows up as inconsistent clamp force across the lift and draw on the trim; on a hydraulic clamp it points to aging seals or degraded fluid. Air-system leaks rob the air table of lift, make the lift drag, and stress the feed; they are usually a cracked line or a tired fitting. None of the three is dramatic at first, which is why they belong on a scheduled check rather than a wait-for-failure list.

When to call a service tech

Operator maintenance covers cleaning, cut-stick rotation, blade changes, and the daily checks above. Call a licensed service technician when the work goes inside the hydraulics, the drive, or the safety circuit: clamp seal-kit replacement, back-gauge spindle or belt work, electrical and control faults, and anything touching the light guard or two-hand interlock. The safety circuit in particular is not an operator-adjustment item. When a fault is intermittent or you are not certain which assembly is at fault, a tech with the service manual and the right gauges will find it faster and more safely than trial and error on a live machine.

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Frequently Asked Questions

Where can I download the Polar 115 operator manual?

We have free PDFs of the Polar 92, 115, 137, and 155 operator manuals in the manuals section above. No email gate or paywall.

What blade fits a Polar 92?

The Polar 92 takes a 92 cm (36.2 in) blade. We list common OEM and aftermarket part numbers in the parts section above. Pre-2005 machines may use a different blade-carrier mount; verify against your machine's serial plate before ordering.

How much does a used Polar Mohr 115 cost?

Used Polar Mohr 115 cutter prices vary with year, operating hours, and condition. Our active listings and the Used Polar Paper Cutters page show current asking prices.

What is the cut capacity of a Polar 137?

The Polar 137 has a 137 cm (54 in) cut width. See the specs section above for the full figures once they are confirmed against the manufacturer spec sheet.

Are Polar paper cutters still supported by the manufacturer?

Polar Mohr, now part of Heidelberger Druckmaschinen, still produces parts and offers service contracts for current and recent-vintage models. Pre-2000 models may require third-party service.