Perforating Blades, 40x61.5x0.5mm, 16tpw, SS, MBO 50210970 (pack of 5)

2-3 weeks
48,13 € VAT excl.

A pack of five (5) circular perforating blades, made of standard steel (ss) material for heavy duty and trouble free operation. They have unmatched sharpness and cutting with high wear resistance. Manufactured to high precision in a modern manufacturing plant. The blade is equivalent to the MBO blade 50210970.

Please note: images of perforating blades are provided for illustrative purposes only. Please refer to the technical specification for dimensions and configuration of blades.

Technical Blade Specification

Blade profile, MBO 50210970
Outside diameter:
61.5 mm
Inside diameter:
40 mm
Blade thickness:
0.5 mm
Number of teeth:
True cutting angle:
Blade geometry (V):
Blade profile (M):
Approx. slot length:
8.6 mm
Approx. distance between slots:
3.5 mm
Blade material:
Equivalent OEM IDs:
MBO 50210970

Pack contents

This product is a pack that contains five (5) MBO compatible perforating blades.

Part geometries, shapes & profiles

Please refer to the image below for details of blade profiles and geometries.

Blade geometries

Overview of perforating blades

With slot perforation, the paper is cut in a series of slots. This makes fold formation much easier and reduces material stresses within the folded sheet. The air trapped during folding can escape, which avoids creases in the folded sheet.

Perforating blades are come with different slot lengths and distances between slots to suit the paper grade and fold type. They can be inserted in either the front mounted or rear mounted slitter shafts. Slot perforating blades with a large number of teeth (between 40 and 80) can be used for tear-off perforations. Dependent on blade specification, possible applications include calendars and mailings. They are generally used in the front mounted slitter shaft, where the movable upper slitter shaft can set the undercut to match the thickness of the broadsheet exactly.

With sequential timed perforation, the tearoff perforating blade is complemented by a timed perforating head on the mounted slitter shaft. This setup works against the slitting wheel on the lower slitter shaft. The control unit determines the timing of the stroke cycles and, as a result, the perforating length in the folded or mailing product.

Punch perforations are created using a rotating punch perforating knife and two dieplates. The punch perforating knife punches out pieces of paper along the perforation line. The fold quality is significantly improved by trapped air escaping. Consequently, punch perforations are ideal for cross folding large numbers of pages (32, 48 or 64 pages) or high grammages of paper.

Punch-perforated sheets are often turned into a book block in the perfect binder without milling. The signatures remain together and the superior sheet edge adhesion produces a more durable end product.

Examples of circular perforating blade arrangements: a) Slot perforation; b) Slot perforation; c) Punch perforation after the parallel fold
Examples of circular perforating blade arrangements: a) Slot perforation; b) Slot perforation; c) Punch perforation after the parallel fold

Other Information

Blade materials
This MBO blade is made of standard steel (ss). Depending on your application, you can save cost, improve quality of cut, reduce interval between sharpening, as well as downtime of your machine by purchasing a blade made of a higher grade metal alloy. We offer blades made of three classes of metal alloys: standard tool steel (SS), high speed steel (HSS) and tungsten carbide (TC).

Packaging and shipment:
These blades ship from the EU (European Union).

Similar names:
Notch solid perf, slot perforator, punch perforator, tear-off perforator, slot perforator, perforating blade, split perforator

Perforating Blades, 40x61.5x0.5mm, 16tpw, SS, MBO 50210970 (pack of 5)