Clarke SBR760 Operation & Maintenance Instructions Manual Download Page 24

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Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]

SERVICE

SHEARING BLADE REVERSAL/REPLACEMENT

The shearing blades are reversible, so when the first cutting edge becomes 
dull, the blades can be rotated to use the second cutting edge.

When both cutting edges of the blade become dull, use wet grinding 
techniques for SK-4 metal or better to sharpen the cutting face of the blade.

The upper shearing blade uses a 5° relief edge and the lower table blade 
does not. However, if you are not comfortable performing the sharpening 
procedure or do not have access to a professional sharpening service, 
replacement blades are available through the Clarke spares department.

Tools Needed

TO REVERSE OR REPLACE THE SHEARING BLADES:

1. Remove the hex bolts and springs 

that secure the shear holddown 
bar (see Figure 42).

 

2. Remove the six cap screws that 

secure the blade, then carefully 
remove it from the machine (see 
Figure 43).

Tip: 

When removing or installing the 

upper shear blade, remove the cap 
screw at one end, then insert a small 
hex wrench or similar tool through the 

Tools Needed

Qty

Wrench or Socket 10 mm

1

Hex Wrench 5mm

1

CAUTION: THE SHEARING 
BLADES ARE SHARP AND CAN 
QUICKLY CUT YOUR HANDS. 
ALWAYS WEAR HEAVY LEATHER 
GLOVES WHEN HANDLING THE 
SHEARING BLADES TO AVOID 
THIS CUTTING HAZARD.

Fig. 42

Fig. 43

Summary of Contents for SBR760

Page 1: ...OPERATION MAINTENANCE INSTRUCTIONS LS0618 ISS 2 3 IN1 SHEET METAL MACHINE MODEL NO SBR760 PART NO 6560030...

Page 2: ...ice GUARANTEE This product is guaranteed against faulty manufacture for a period of 12 months from the date of purchase Please keep your receipt which will be required as proof of purchase This guaran...

Page 3: ...AWAY from the work area 8 MAKE WORKSHOP CHILDPROOF Use padlocks master switches and remove start switch keys 9 DO NOT USE IN DANGEROUS ENVIRONMENTS DO NOT use machinery in damp wet locations or where...

Page 4: ...oves eye protection and leather boots with extra toe protection when using this machine 6 BODY POSITION To avoid injury due to slipping or falling ALWAYS maintain secure footing and a comfortable body...

Page 5: ...D BY LACK OF FAMILIARITY OR FAILURE TO PAY ATTENTION USE THIS MACHINE WITH RESPECT AND CAUTION TO DECREASE THE RISK OF OPERATOR INJURY IF NORMAL SAFETY PRECAUTIONS ARE OVERLOOKED OR IGNORED SERIOUS PE...

Page 6: ...6 Parts Service 020 8988 7400 E mail Parts clarkeinternational com or Service clarkeinternational com PARTS IDENTIFICATION Fig 1...

Page 7: ...e parts must be removed For optimum performance clean all moving parts or sliding contact surfaces Avoid chlorine based solvents such as acetone or brake parts cleaner that may damage painted surfaces...

Page 8: ...nimum working clearances MOUNTING The base of this machine has holes that allow it to be mounted to a workbench For a safe and smooth operation of this machine it MUST be securely mounted to an approp...

Page 9: ...knob out until it is flush with the rear of the end cap 3 Insert the hand crank into the slot see Figure 7 4 Replace the end cap and cap screws and tighten the lock knob NOTE It is your preference whi...

Page 10: ...n exact radius is a trial and error process Performing multiple passes through the machine with gradual reductions in the curve radius produces better results than trying to make the curve in one pass...

Page 11: ...the thickness adjustment leaf bolts counterclockwise until the upper roller can be lifted with enough clearance for the workpiece NOTE Performing multiple passes through the machine with gradual reduc...

Page 12: ...one tighten one adjustment knob more than the other 5 Repeat Step 4 until you have produced the desired curve CREATING CYLINDERS If you know the diameter of the cylinder you want to create use the for...

Page 13: ...ce between the upper and lower rollers and just over the rear roller as illustrated in Figure 16 then snug the thickness adjustment leaf bolts down to secure the workpiece Make sure you tighten the le...

Page 14: ...ps 4 7 until you have produced the desired cylinder see the illustration in Figure 20 If the ends of the cylinder do not meet lift the rear roller equally at both ends then process the entire cylinder...

Page 15: ...roller by rotate the thickness leaf bolts clockwise to apply the required pressure to the top roller BENDING WIRE Your sheet metal machine can bend wires rods and small diameter tubing with diameters...

Page 16: ...is approximately 1 27 mm That means you need to start with a workpiece that is approximately 1 27 mm shorter than the desired outside length of the finished workpiece as illustrated in the example of...

Page 17: ...he hand crank to lower the finger receiver until you can position the workpiece underneath the fingers with the bend line aligned with the tips as shown in Figure 27 NOTE When performing the same bend...

Page 18: ...tion loosen the cap screws on the brake finger gib and configure the fingers for your operation Remove the fingers you do not need OPERATING SHEARING SHEARING OVERVIEW The SBR760 has a set of reversib...

Page 19: ...ween the shearing blades to accommodate your workpiece refer to the Shearing Blade Gap Adjustment on page 25 for detailed instructions NOTE If you are using the rear work stop adjust the stop so that...

Page 20: ...ounting bolts Check replace damaged rollers Check replace cracked or damaged brake fingers or receiver Sharpen replace dull or nicked shearing blades Any other unsafe condition MONTHLY MAINTENANCE Lub...

Page 21: ...the shearing blades is covered in the Shearing Blade Gap Adjustment on page 25 3 Make sure the finger receiver and upper shear blade move up and down smoothly retighten the hex bolts just until they a...

Page 22: ...hen use the hand crank to raise the receiver to fully seat the fingers up against the casting behind the gib as shown in Figure 37 9 Re tighten all of the gib cap screws GEARS Clean away grease and bu...

Page 23: ...roller see Figure 40 2 Use a shop rag and degreasing spirits to clean the bushings and the ends of the roller 3 Apply a thin coat of multi purpose grease to the roller ends 4 Re install the bushings 5...

Page 24: ...procedure or do not have access to a professional sharpening service replacement blades are available through the Clarke spares department Tools Needed TO REVERSE OR REPLACE THE SHEARING BLADES 1 Rem...

Page 25: ...the cut Follow the procedures below to make sure this adjustment is correct for the workpiece material being processed PERFORMING THE SHEAR TEST 1 While keeping your fingers clear of the shear blades...

Page 26: ...even then re tighten the cap screws to secure the table in place NOTE Rotating the table adjustment screws clockwise moves the table toward the upper shear blade 3 Perform the previous shear test 4 I...

Page 27: ...our machine you may need to align the brake fingers with the finger receiver from side to side TO ALIGN THE BRAKE 1 Remove clean and de burr all of the finger tips and the receiver groove then inspect...

Page 28: ...shown in Figure 46 5 Starting at one end visually check the gap between the brake fingers and the metal bar 6 If you find a gap at one end of the brake loosen the cap screw shown in Figure 46 on that...

Page 29: ...the workpiece and rollers Polish out any nicks burrs in the rollers or replace them PROBLEM CAUSE SOLUTION Heavy resistance during bending Machine capacities are exceeded Operate within the listed ca...

Page 30: ...ough gap between blades Increase blade gap Cuts are not square Uneven contact with guide or work stop Maintain proper contact with guide and work stop Blade gap unequal across length Properly adjust b...

Page 31: ...t Number 6560030 Weight 126 kg Width Depth Height 905 x 390 x 565 mm Capacities Maximum Workpiece Width 760 mm Maximum Workpiece Thickness 1 mm Pan Box Brake Minimum Reverse Bend 9 mm Pan Box Brake Ma...

Page 32: ...31 Parts Service 020 8988 7400 E mail Parts clarkeinternational com or Service clarkeinternational com EXPLODED DIAGRAM PARTS LIST...

Page 33: ...G ROD TGSBR76020 21 LIMITING BLOCK TGSBR76021 22 SUPPORTING PLATE TGSBR76022 23 BLADE TGSBR76023 24 BACK PRESSING ROLL TGSBR76024 25 LEAD SCREW TGSBR76025 26 NUT M10 TGSBR76026 27 ADJUSTABLE SCREW TGS...

Page 34: ...34 Parts Service 020 8988 7400 E mail Parts clarkeinternational com or Service clarkeinternational com DECLARATION OF CONFORMITY...

Page 35: ...35 Parts Service 020 8988 7400 E mail Parts clarkeinternational com or Service clarkeinternational com NOTES...

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