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4.Material too coarse 
 
5.Incorrect blade tension 
 
6.Teeth in contact with material before saw 
is started 
 
7. Blade rubs on wheel flange 
8. Miss-aligned guide bearings 
9. Blade too thick 
10.Cracking at weld 
 

blade 

4. Use a blade of slow speed    and 

small teeth spacing 

5. Adjust to where blade just       

does not slip on wheel 

6. Place blade in contact      with 

work after motor is    starred 

7. Adjust wheel alignment 
8. Adjust guide bearings 
9. Use thinner blade 

10. Weld again, beware the welding 
skill. 

Premature Blade Dulling 

1. Teeth too coarse 
2. Too much speed 
3. Inadequate feed pressure 
 
4.Hard spots or scale on material   
 
5. Work hardening of material.   
 
6.Blade twist 
 
7. Insufficient blade 
 
8. Blade slide 

1. Use finer teeth 
2. Decrease speed 
3. Decrease spring tension on  side of 

saw 

4. Reduce speed, increase feed 

pressure 

5. Increase feed pressure by reducing 

spring tension 

6. Replace with a new blade,    and 

adjust blade tension 

7. Tighten blade tension      adjustable 

knob 

8. Tighten blade tension 

Unusual Wear on   

  Side/Back of Blade 

1.

 

Blade guides worn. 

2.

 

Blade guide bearings not adjust properly 

3.

 

Blade guide bearing bracket is loose 

1.

 

Replace. 

2.

 

Adjust as per operators manual 

3.

 

Tighten. 

Teeth Ripping from 

 Blade. 

1. Tooth too coarse for work 
2. Too heavy pressure; too slow speed. 
3. Vibrating work-piece. 
4. Gullets loading 
 

1. Use finer tooth blade. 
2. Decrease pressure, increase speed 
3. Clamp work piece securely 
4. Use coarser tooth blade or brush to 

remove chips. 

Motor running too hot 

1.

 

Blade tension too high.   

2.

 

Drive belt tension too high. 

3. Blade is too coarse for work 
4. Blade is too fine for work 
5. Gears aligned improperly 
 
6. Gears need lubrication 
7. Cut is binding blade 

1. Reduce tension on blade. 
2. Reduce tension on drive belt. 
3. Use finer blade. 
4. Use coarse blade. 
5. Adjust gears so that worm is in 

center of gear.   

6. Check oil path. 
7. Decrease reed anti speed 

Bad Cuts (Crooked) 

1. Feed pressure too great. 
 
 
2. Guide bearings not adjusted    properly 
 
3. Inadequate blade tension. 
 
4. Dull blade. 
5. Speed incorrect. 
6. Blade guides spaced out too much 
7. Blade guide assembly loose 
8. Blade truck too far away from wheel 
flanges 

1. Reduce pressure by increasing 

spring tension on side of saw 

2. Adjust guide bearing, the clearance 

can not greater than 0.001. 

3.

 

Increase blade tension by adjust 
blade tension   

4.

 

Replace blade 

5. Adjust speed 
6. Adjust guide space. 
7. Tighten 
8. Re-track blade according to 

operating instructions. 

Bad Cuts (Rough) 

 

1. Too much speed or feed 
2. Blade is too coarse 

1. Decrease speed or feed. 
2. Replace with finer blade. 

Summary of Contents for RF 270S

Page 1: ...METAL CUTTING BAND SAW MACHINE MODEL 270S INSTRUCTION MANUAL 050110 R0...

Page 2: ...achine Operation 7 Make Proper Tooth Selection 8 BI Metal Speeds And Feeds 9 Use Of Main Machine Parts 10 Maintaining 11 Trouble shooting 12 Circuit Diagram 13 Parts Lists Drawing CAUTION Install saw...

Page 3: ...Aspect Saw arm Control Panel The blade tension handle Motor The start button Coolant pump Base Angle Sale Move Vise The vise fixed handle The move vise handle The swivel vise base of handle Vise base...

Page 4: ...or is being mounted connected or reconnected 8 ALWAYS keep hands and fingers away from the blade 9 STOP the machine before removing chips 10 SHUT OFF power and clean the BAND SAW and work area before...

Page 5: ...de tension after initial cut with a new blade 6 TO RPOLONG BLADE LIFE ALWAYS release blade tension at the end of each workday 7 CHECK COOLANT DAILY Low coolant level can cause foaming and high blade t...

Page 6: ...erage blade cover conforms to CE stipulation Well coolant fluid collection system provides clean and dry and safety of the working area 9 Chip pan underneath the working table prevents coolant fluid l...

Page 7: ...olts into base holes properly after machine in balance 5 Turn off the power before wiring be sure machine is in proper grounding Overload circuit breaker is recommended for safety wiring 6 Keep machin...

Page 8: ...he chart Select the tooth Ditch on the ring marked with the tubing and structural shape which aligns with the average width you are cutting EXAMPLE 4 100mm outside diameter 3 75mm inside diameter tubi...

Page 9: ...230 volt single phase or 400 volt 3 phase magnetic control Before connecting your machine to an electrical power system be sure the motor shaft is running in the correct direction We recommend that 1...

Page 10: ...e back of the blade is just lightly touching the wheel flanges of both wheels while the machine is running 9 5 ADJUSTING CUTTING WIDTH First loosen screw A fig 2 Move the left blade guide bar to the s...

Page 11: ...a 90 degree position completely opened Remove work piece CONTINUED CUTTING When you need to cut a work piece many times just raise the vise handle A to loosen and adjust work piece position Then push...

Page 12: ...accurate performance c Keep work area clean release vise cutter work piece from table switch off power source take chip or dust away from machine and follow instructions lubrication or coating rust p...

Page 13: ...nual 3 Tighten Teeth Ripping from Blade 1 Tooth too coarse for work 2 Too heavy pressure too slow speed 3 Vibrating work piece 4 Gullets loading 1 Use finer tooth blade 2 Decrease pressure increase sp...

Page 14: ...up after pushing the raising button 1 Improper setting of depth gauge 1 Press the emergency stop Button and RESET 2 Check the upper limit switch and stop round Position Make sure the limit switc is al...

Page 15: ...14 12 CIRCUIT DIAGRA...

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