{"id":1922,"date":"2026-07-21T06:59:01","date_gmt":"2026-07-21T06:59:01","guid":{"rendered":"https:\/\/gearrack.top\/?p=1922"},"modified":"2026-07-21T06:59:01","modified_gmt":"2026-07-21T06:59:01","slug":"bevel-gears-for-printing-and-packaging-machines","status":"publish","type":"post","link":"https:\/\/gearrack.top\/ko\/bevel-gears-for-printing-and-packaging-machines\/","title":{"rendered":"Bevel Gears for Printing and Packaging Machines"},"content":{"rendered":"
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GEAR APPLICATION GUIDE \u00b7 BEVEL GEAR \u00b7 B06<\/span><\/p>\n

Bevel Gears for Printing and Packaging Machines:
\nRight-Angle Drives, Register Control and Hygienic Design<\/span><\/h1>\n

Bevel gears in printing and packaging machines solve the fundamental challenge of redirecting power between shafts at right angles in the confined space of a machine frame \u2014 an application requirement that spur and helical gears cannot satisfy without a secondary gearbox stage. From the folder-gluer unit drive in a carton production line to the ink duct adjustment drives of a multi-colour offset press, bevel gears provide compact right-angle power redirection with high precision and, in food and pharmaceutical packaging applications, the corrosion resistance required to survive daily CIP cleaning. This comprehensive guide covers bevel gear selection, material specification, register accuracy requirements, and hygienic design for printing press and packaging machinery right-angle drive applications.<\/p>\n

20CrMnTi \u00b7 316L \u00b7 C45 \u00b7 M2\u2013M10<\/span>
\nStraight \u00b7 Spiral \u00b7 DIN 5\u20138 \u00b7 NSF H1<\/span>
\nOffset Press \u00b7 Flexo \u00b7 Folder-Gluer \u00b7 Filler<\/span><\/div>\n<\/div>\n<\/div>\n
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MODULE RANGE<\/p>\n

M2 \u2013 M10<\/p>\n

Printing and packaging machine bevel gear module range. Press ink duct adjusters and register controls: M2\u2013M4. FFS cross-seal jaw drive: M3\u2013M6. Carton folder-gluer main drive: M5\u2013M8. Heavy case packer and corrugator right-angle drive: M6\u2013M10<\/p>\n<\/div>\n

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GEAR FORM<\/p>\n

Straight \/ Spiral<\/p>\n

Straight bevel gears for register adjustment and low-speed auxiliary drives where noise is not critical. Spiral bevel gears for main folder-gluer drives, high-speed FFS jaw drives, and any bevel gear drive above 3 m\/s pitch line velocity where reduced noise and higher load capacity are required<\/p>\n<\/div>\n

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SHAFT ANGLE<\/p>\n

90\u00b0 Standard<\/p>\n

Virtually all printing press and packaging machine bevel gears are 90\u00b0 shaft angle. Non-right-angle bevel gears (miter bevel 1:1 ratio) are used for pure direction changes without ratio in some press auxiliary drive trains. Custom shaft angles available on request<\/p>\n<\/div>\n

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QUALITY CLASS<\/p>\n

DIN 5 \u2013 8<\/p>\n

DIN 5\u20136 for high-precision register drive bevel gears. DIN 6\u20137 for main folder-gluer and FFS jaw drives. DIN 8 for auxiliary and slow-speed packaging machine bevel gears where register accuracy and noise are not the specification drivers<\/p>\n<\/div>\n<\/div>\n

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The Role of Bevel Gears in Printing Press and Packaging Machine Architecture<\/h2>\n

The layout of a printing press or packaging machine is dominated by the need to deliver power to rotating components (cylinders, rolls, carton mandrels, fill tubes, jaw sets) whose axes are arranged perpendicular to or at right angles to each other and to the machine\u2019s main longitudinal drive shaft. A sheet-fed offset press body drive shaft runs longitudinally along the press; the impression cylinder, plate cylinder, and blanket cylinder rotate on transverse axes perpendicular to the body shaft. Delivering power from the longitudinal body shaft to each transverse cylinder requires either a helical gear train extending around the end of the press (the solution actually used for the cylinder gear train) or bevel gear right-angle drives at each cylinder position. In packaging machines, the situation is even more diverse \u2014 FFS jaw sealing systems, carton folder-gluer fold sections, label dispensers, and product infeed screw conveyors all rotate on axes at various orientations relative to the main machine drive shaft, and bevel gears provide the most compact and mechanically direct solution for each right-angle drive requirement.<\/p>\n

\"bevel<\/p>\n

Korea Ever-Power’s bevel gears for printing and packaging machines<\/a> are manufactured in 20CrMnTi case carburized (standard for main drive and high-speed bevel gear applications), C45 induction hardened (for auxiliary and slow-speed adjustment drives), and 316L stainless (for hygienic packaging machines in food, dairy, and pharmaceutical environments). The production range covers both straight bevel gears (for register adjustment, position control, and low-speed auxiliary drives) and spiral bevel gears (for main folder-gluer section drives, FFS jaw drives, and any application where the higher noise, lower load capacity, and impact characteristics of straight bevel gears would be disadvantageous). Korea Ever-Power also manufactures miter bevel gear sets (1:1 ratio, 90\u00b0) for direction-change-only applications in press and packaging machine auxiliary drives \u2014 these are among the highest-volume bevel gear applications in the printing and packaging industry.<\/p>\n

Register accuracy in printing press bevel gear drives is a more nuanced specification than in standard industrial bevel gear applications. In a web offset press, the bevel gear drives in the folder section must maintain precise angular synchronisation between the cutting cylinder, folding cylinder, and collection belt \u2014 any transmission error in the bevel gear mesh produces a periodic variation in the cut-off register (the position of the fold relative to the print image). At web speeds of 8\u201312 m\/s, the cut-off register tolerance is typically \u00b10.5 mm, which at the folder cylinder circumference of 600 mm translates to a fold position angular error of \u00b10.5\/600 \u00d7 360\u00b0 = \u00b10.3\u00b0 \u2014 requiring bevel gear transmission error below 5 mrad peak-to-peak. This is equivalent to the requirement for printing press spur cylinder gears, and for the same reason: DIN 5\u20136 quality class, spiral bevel tooth form with lead crowning, and matched pair assembly to verify combined TE before installation.<\/p>\n

\"forged
Korea Ever-Power forged 20CrMnTi case carburized spiral bevel gear pair for packaging machine main drive application \u2014 M5, ratio 1.5:1, 90\u00b0 shaft angle, HRC 60\u201362 tooth surface, DIN 6 quality class. Lapped after grinding to achieve tooth contact pattern covering 60\u201365% of tooth face under load. Contact pattern verified under blue marking at rated torque before shipment. Tooth transmission error \u2264 4 mrad peak-to-peak confirmed on gear rolling test rig. Used in horizontal FFS flow wrapper cross-seal jaw drive, carton folder-gluer fold section drive, and automatic cartoning machine mandrel drive applications at speeds up to 400 ppm.<\/figcaption><\/figure>\n<\/section>\n
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Application-Specific Bevel Gear Drive Specifications<\/h2>\n
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DRIVE 01<\/p>\n

PRINTING PRESS
\nFOLDER SECTION<\/p>\n<\/div>\n

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Bevel gear specification:<\/strong> M4\u2013M8, 20CrMnTi carburized, spiral bevel, DIN 5\u20136, ratio 1:1 to 2:1, contact pattern 60\u201365% tooth face under rated load. The web offset press folder section uses spiral bevel gear sets to transfer power from the longitudinal folder drive shaft to the transverse cutting cylinder, folding cylinder, and fan delivery system axes. Register requirements at the folder are among the most demanding of any press section \u2014 cut-off register tolerance of \u00b10.5 mm at web speeds above 10 m\/s requires spiral bevel gear transmission error below 5 mrad. The spiral bevel tooth form is mandatory (straight bevel gears have impact-loaded tooth engagement that generates TE spikes well above 5 mrad at folder drive speeds). Korea Ever-Power supplies folder section spiral bevel gear replacements for Goss Community, Manroland Geoman, KBA Compacta, and other web press folder section bevel gear applications.<\/p>\n<\/div>\n<\/div>\n

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DRIVE 02<\/p>\n

CARTON FOLDER-
\nGLUER DRIVE<\/p>\n<\/div>\n

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Bevel gear specification:<\/strong> M5\u2013M8, 20CrMnTi carburized or C45 induction hardened (depending on speed), straight or spiral bevel, DIN 6\u20137, service factor 1.25 (smooth electric drive). Carton folder-gluer machines (used for corrugated, folding boxboard, and laminated carton production) use bevel gear right-angle drives at each fold section unit where the fold rollers must rotate perpendicular to the main machine transport direction. The fold section units require synchronised speed across all fold stations to prevent carton distortion \u2014 spur gear trains with bevel gear right-angle drives at each station are the standard architecture. At fold section speeds up to 200 m\/min, pitch line velocity of the bevel gears is moderate (2\u20134 m\/s) \u2014 straight bevel gears are acceptable at these speeds if the transmitted torque is below the spiral bevel\u2019s advantage threshold. Korea Ever-Power supplies folder-gluer section straight and spiral bevel gear sets for all major folder-gluer OEMs including BOBST, BHS Corrugated, Bahm\u00fcller, and Martin.<\/p>\n<\/div>\n<\/div>\n

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DRIVE 03<\/p>\n

FFS CROSS-SEAL
\nJAW DRIVE<\/p>\n<\/div>\n

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Bevel gear specification:<\/strong> M3\u2013M6, 20CrMnTi carburized or 316L stainless (for food product contact zones), spiral bevel, DIN 6, ratio 1:1 to 1.5:1, NSF H1 lubricant for food applications. The horizontal FFS (flow wrapper) cross-seal jaw drive uses bevel gear right-angle gearboxes to transfer the servo motor drive from the machine frame (where the motor is mounted for access and vibration control) to the transverse cross-seal jaw axes. The jaw bevel gear drive must transmit the peak torque of the jaw closing cycle (which includes the force required to compress the seal jaws against spring resistance and the film seal resistance) plus the inertia torque of accelerating the jaw mass through the rotary jaw cycle \u2014 peak torques are typically 3\u20135\u00d7 the average seal torque. 20CrMnTi spiral bevel gears with service factor 1.5 are the standard specification for cross-seal jaw bevel drives. In food FFS machines with exposed bevel gearboxes near the product zone, 316L stainless housings and NSF H1 lubricant are mandatory per EU Machinery Directive hygiene requirements.<\/p>\n<\/div>\n<\/div>\n

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DRIVE 04<\/p>\n

PRESS INK DUCT
\nREGISTER ADJUST<\/p>\n<\/div>\n

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Bevel gear specification:<\/strong> M2\u2013M4, C45 normalised or 20CrMnTi, straight miter bevel (1:1 ratio), DIN 6\u20137. Printing press ink duct and register fine adjustment drives use small straight bevel or miter bevel gear pairs to allow the register control handwheel or servo motor \u2014 which is accessible from the press operating aisle \u2014 to adjust the angular position of the impression cylinder or plate cylinder through a small angular correction. These are low-torque (< 5 Nm), low-speed (< 50 RPM adjustment), low duty cycle applications where gear fatigue life is essentially unlimited and the specification is dominated by cost, compactness, and backlash. Register adjustment bevel gear pairs must have backlash below 0.05 mm to allow fine register correction without lost motion \u2014 tighter than standard commercial bevel gears but achievable with DIN 6\u20137 quality and careful centre distance control at assembly. Korea Ever-Power maintains stock of common register adjustment bevel gear sizes (M2, M2.5, M3, M4, ratios 1:1 and 1.5:1) for immediate shipment to press service engineers without minimum order quantity restrictions.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\"bevel
Korea Ever-Power bevel gear tooth contact pattern verification \u2014 blue marking contact pattern test on spiral bevel gear pair for printing machine folder drive application. Contact pattern under no-load: central 50\u201355% of tooth face width (typical for spiral bevel gears that spread under load). Under rated torque, the contact spreads to cover 60\u201365% of the tooth face centrally \u2014 the correct pattern for maximum load capacity without edge contact from housing deflection under load. All Korea Ever-Power printing and packaging machine bevel gear pairs are supplied with a contact pattern photograph at rated torque as part of the quality documentation package. Contact pattern measurement is conducted on a dedicated bevel gear test rig at rated torque with the gear pair assembled at the specified mounting distances and pinion offset.<\/figcaption><\/figure>\n<\/section>\n
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Hygienic Bevel Gear Design for Food Packaging Applications<\/h2>\n

Food packaging machine bevel gears in or near the product zone face the same hygienic design requirements as hygienic spur gears \u2014 316L stainless material, NSF H1 lubricant, IP67 or IP69K sealing, and EHEDG-compliant housing surface finish. However, bevel gearboxes present additional hygienic design challenges compared to parallel-shaft spur gear housings because of the inherent geometric complexity of the bevel gear right-angle arrangement: the corner geometry where the two shaft openings intersect the housing creates crevices and upward-facing surfaces that trap product residue and cleaning water if not specifically designed for drainage. Korea Ever-Power addresses this in hygienic bevel gearbox designs by using smooth cast stainless housings with radiused internal corners, sloped external surfaces on the housing body, and drain ports at the lowest point of each oil cavity.<\/p>\n

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STRAIGHT vs SPIRAL BEVEL \u2014 PRINTING AND PACKAGING SELECTION GUIDE<\/p>\n

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USE STRAIGHT BEVEL WHEN:<\/p>\n