Rotary Shears

Reddson Engineers Pvt. Ltd. are pioneers in the manufacture of Online Rotary Shears in India.

REDDSON has designed and developed "On Line Rotary Shearing System" to directly blank circles continuously from the coil
thus eliminating the requirement for Guillotine Shears, Mechanical / Hydraulic Presses and Blanking tooling etc.

The System

On Line Rotary Shearing System consists of following machinery

  • Hydraulic Decoiler

  • Hydraulic Straightener

  • Idle Conveyors & Powered Conveyors

  • .Hydraulic Cut off Shear.

Rotary shears

Specifications for rotary shearing machines - standard RSN series

# Model RMSM 160 RMSM 250 RMSM 315 RMSM 400 RMSM 600 RMSM 750 RMSM 1000 RMSM 1500
1. Capacity at 12 up from BDC. Tonnes 160 250 315 400 600 750 1000 1500
2. Stroke Length mm 315 400 400 400 400 500 500 500
3. Slide Adjustment Motorised mm 125 150 150 150 200 200 200 200
4. Shut hight (storkedown, adj. Up) (top Bottom of slide) mm 640 700 750 750 850 850 950 950
5. No. of Suspension points - 2 2 2 2 2 2 4 4
6. Size of Bolster mmLR
FB		 1900
1300		 1900
1300		 1900
1300		 1900
1300		 1900
1300		 2500
1600		 2500
2000		 3000
2000
7. Slide Area mmLR
FB		 1900
1300		 1900
1300		 1900
1300		 1900
1300		 1900
1300		 2500
1600		 2500
2000		 3000
2000
8. Strokes per min. No. 20 20 15 15 15 15 15 15
9. Die cushion capacity capacity at 7 kg/cm2 Tonnes 32 50 60 80 80 100 125 150
10. Die cushion stroke mm 160 160 160 160 160 200 200 250
11. Die cushion pad area mmLR
mmFB		 800
800		 800
800		 800
800		 800
800		 800
800		 1100
800		 1100
1000		 1100
1000
12. Main Motor KW/RPM 15/1500 22/1500 30/1500 37/1500 45/1500 55/1500 75/1500 110/1500
13. Slide Adjustment Motor KW/RPM 2.2/1500 2.2/1500 3.7/1500 5.5/1500 5.5/1500 7.5/1500 7.5/1500 7.5/1500

Specifications for rotary shearing machines - deep throat series

S.No. Specification / Model RST 1.5 RST 2
1. Max. Sheet Thickness in MS
UTS 40 Kg / mm²		 1.5 mm
RST 2		 2 mm
2. Depth of Throat of the Machine 1550 mm 1550 mm
3. Max. Sheet Width. (Length Unlimited) 1500 mm 1500 mm
4. Cutting Speed Two Speed
3 metrs / min
6 metrs / min		 Two Speed
3 metrs / min
6 metrs / min
5. Electrical Motor 3 HP 3 HP
6. Sheet Guiding Manual Manual

Online Rotary Shearing System

Online rotary shearing system

Reddson Engineers Pvt. Ltd. are pioneers in the manufacture of Online Rotary Shears in India.

REDDSON has designed and developed "On Line Rotary Shearing System" to directly blank circles continuously from the coil
thus eliminating the requirement for Guillotine Shears, Mechanical / Hydraulic Presses and Blanking tooling etc.

The System

On Line Rotary Shearing System consists of following machinery

  • Hydraulic Decoiler

  • Hydraulic Straightener

  • Idle Conveyors & Powered Conveyors

  • .Hydraulic Cut off Shear.

The Principle

The principle of Shearing Circles is by Online Rotary Shearing Method-that is, While the sheet is held rigidly, a pair of cutters rotate around the cutting tool and produce a perfect circle. Online Rotary Shearing can be done in a single row or in a double row, where two numbers of Online Rotary Shears are placed diagonally opposite to perform Zig-Zag Blanking

Hydraulic Decoiler and Hydraulic Straighter are provided to decoil and straighten the coiled sheet.
After circle blanking by the On Line Rotary Shears, Hydraulic Cut Off Shear cuts off the scrap.

  • Blanking of circles out of Mild Steel, Stainless Steel, Aluminum & Other non-ferrous materials from coils, eliminating the need to make squares and hence the elimination of Guillotine Shears, Presses and Blanking Tools.

  • Blanking of larger Dia Circles up to 1500mm, which is otherwise is very difficult to produce from presses, which should be of high capacity & huge Blanking Tooling.

  • Blanking of Circles in two / three rows in a jig-jag position, there by effecting a saving of 7% / 10 % on material.

  • Substantial Reduction in manpower by eliminating operations like shearing, Press Blanking & Intermediate Material movements.

  • Simplicity in operation & maintenance compared to huge press & press tool maintenance.

  • Low Power Consumption because of revolutionary Rotary Shearing Principle, when compared to high power consuming shears & presses.

  • Cost saving of 7% on material & other savings on Labor, Power material handling, material price etc.


    High Productivity up to 8 circles per minute


Three Row Model Online Rotary Shearing system shall have the following additional advantages over Two
Row Model System

  • The Material saving shall be over 10% because of Zig-Zag Shearing of 3 circles at a time.

  • The Productivity increases by 50%, when compared ot Two Row System

Single row online rotary shearing system

Model OSN-S 500 600 750 900 1050 1200 1350
Diameter of Circles mm Dia 425 to 550 550 to 675 675 to 825 825 to 975 975 to 1125 1125 to 1275 1275 to 1425
Maximum thickness of Sheet in Mild Steel mm 5 5 5 5 5 5 5

Double row and Three row rotary shearing system

OSN-D 500 600 700 OSN-T 500 600 700
Diameter of Circles mm Dia 425 to 550 550 to 675 675 to 825 mm Dia 425 to 550 550 to 675 675 to 825
Maximum thcikness of Sheet in Mild Steel mm 4 4 4 mm 5 5 5