Trademaster RF 270S Instruction Manual Download Page 8

 

 

 

7

 
7. MAKE PROPER TOOTH SELECTION 

For maximum cutting efficiency and lowest cost 

per cut, it is important to select the blade with the right 
number of teeth per inch (TPI) for the material being cut. 
The material size and shape dictate tooth selection.

 

TOOTH 
SELECTION 
 
 
 

You need to consider: 

The width of the cut - 

That is, the distance in the cut 

that each tooth must travel from the point it enters the 
work-piece until it leaves the work-piece, and   
1.The shape of the work-piece. 

z

 

Squares, Rectangles, Flats (Symbol :

 

)

 

Locate the width of cut on the chart. (Inches 
on the outer circle and millimeters on the 
inner circle.) Select the tooth pitch on the 
ring marked with the square shape which 
aligns with the width of cut. 
EXAMPLE: 6" (150mm) square, use a 2/3 
Vari-Tooth. 

z

 

Round Solids (Symbol : 

)

 

Locate the diameter of your work-piece on 
the chart. Select the tooth pitch on the ring 
marked with the round shape which aligns 
with the size of stock you are cutting. 
EXAMPLE: 4" (100mm) round, use a 3/4 
Vari-Tooth. 

z

 

Tubing, Pipe, Structural ( Symbol : O H 
^ )   

Determine the average width of cut by 
dividing the area of the work-piece by the 
distance the saw blade must travel to finish 
the cut. Locate the average width of cut on 
the 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 tubing. 

           4"(100mm) OD 

=12.5 sq.ln. (79cm

2

           3"(75 mm ) ID 

= 7.0 sq.ln. (44cm

2

 
                            Area                              = 5.5 sq.ln. (35cm

2

 
    5.5 sq.ln. (35cm

2

) / 4" (100mm) 

distance =1.38(35mm) average width 
        1.38" (35mm), use a 4/6 Vari-Tooth 
 

NOTE:

 The band speed and cutting rate 

recommendations presented on this chart are 
approximations and are to be used as a 
starting point for most applications. For 
exact sawing parameters' consult your saw 
blade supplier. 

 
8. BI-METAL SPEEDS AND FEEDS 

These figures are a guide to cutting 4"(100mm) material 
(with a 314 Vari-Tooth) when using a cutting fluid. 
Increase Band Speed: 

  15% When cutting 

1/4"(6.4mm) material (l0/l4 Vari-Tooth) 
 

  12% When cutting 3/4"(19 

mm) material (6/10 Vari-Tooth) 
  

10% 

When 

cutting 

1-1/4"(32 mm) material(5/8 Vari-Tooth) 
 

  5% When cutting 2-1/2" 

(64 mm) material(4/6 Vari-Tooth) 
Decrease Band Speed:  12% When cutting 8"(200mm) 
material(2/3 Vari-Tooth) 
 

BAND SPEED 

 
MATERIA

 ALLOY 
 ASTM NO. 

FT./MIN

M/MIN 

173,932 314 

96 

330,365 284 

87 

623,624 264 

81 

230,260,272 244 

74 

280,264,632,655 244 

74 

101,102,110,122,17

234 71 

1751,182,220,510 234 

71 

625,706,715,934 234 

71 

630 229 

70 

Copper 
Alloy 

811 214 

65 

1117 339 

103 

1137 289 

88 

1141,1144 279 

85 

1141 HI STRESS 

279 

85 

Carbon 
Steel  

1030 329 

100 

Carbon 
Steel 

1008,1015,1020,10
25 

319 97 

 

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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