Yamaha F8A User Manual download pdf (Page 7)

A – The A model is programmable for Automatic Cycles. Press cycle

start and "walk away", the A model will center, bore to the exact

programmed depth, index and move tool away from the cylinder wall

and rapid to the upper start position ready for the next operation.

M – The M model has manual push button controls with variable feed

rate and spindle RPM rotary controls. The M model must be floated and

centered manually and depth of cut stop adjusted. Once centering is

complete and boring starts, the machine will stop at the depth stop, index

and move the tool away from the cylinder wall and rapid to the upper

start position ready for the next operation.

The electronic handwheel on the A and X model has 2 modes of operation. In coarse

mode, each "click" of the handwheel will move the machine exactly .001" (.01mm)

and in fine mode, each click will move the machine exactly .0001" (.002mm).

Operation and programming of Rottler Boring Machines is done with

ergonomical keypads positioned on the front of the machine. Rottler pioneered

the development of this simple method of operation and the display tells the

operator exactly where the spindle is positioned at all times. Programmed

information such as depth of cut, speed, feed is clearly displayed so the

operator knows the machine movements at all times. The A models store

programs in their memory for future use.

MADE IN U.S.A.

The F Series Boring Machines are unlike anything

else available to the automotive and diesel engine

builders. These machines represent the next

generation of boring equipment, evolving from the

Rottler F2 boring bar which has been the industry

standard for over 78 years. With improvements in

electronic motors and cutting tool technology, Rottler

Boring Machines are 2 to 3 times more productive

than anything else available on the market.

Speed

All three models of F Series machines, from the F7M

to the top of the line F8X, have the same high

performance AC servo motor, delivering up to 1200

RPM. Independent feed control

allows you to change the feed rate

from .001” (.025mm) to .012” (.3mm)

per revolution.

Accuracy

The F Series uses a precision ground

ball screw to control feed rate and

cutter position. This allows the

machines to repeat cutter position

accuracy to .0002” (.005mm). The A

and X have a digital programmable

cycles. Boring depth can be

programmed to .0001” (.0025mm).

Strength

Rottler has increased the size of the

F8 spindle to ensure the best possible

bore geometry at high spindle speeds.

The Rottler proven spindle and

bearing design gives you a rigid

machine capable of making heavy

sleeve cuts for a life time. The F7 spindle has been

reduced to allow the machining of compact engines,

motorcycles, marine blocks, etc.

F8M F8A

Bore Capacity Standard 3.250" to 5.0" 83mm to 127mm 3.250" to 5.0" 83mm to 127mm

Bore Capacity Optional 1.5" to 9.0" 38mm to 228mm 1.5" to 9.0" 38mm to 228mm

Spindle Speed RPM Variable 100 to 1200 RPM Variable 100 to 1200 RPM

Feed per Revolution

Spindle Travel Vertical

15” 381 mm 15” 381 mm

Spindle Travel Horizontal

50” 1270 mm 50” 1270 mm

Width of Machine Base

44.5” 1130 mm 44.5” 1130 mm

Overall Width of Machine

60” 1524 mm 60” 1524 mm

Overall Height of Machine

74.5" 1892 mm 80" 2032 mm

Overall Depth of Machine

51" 1295 mm 51" 1295 mm

T Slot Machine Base Table

50" x 21” 1270 mm x 530 mm 50" x 21” 1270 mm x 530 mm

Spindle Taper to Machine Base

26” 670 mm 26” 670 mm

Floor Space Required

64" x 46" 1625 mm x 1170 mm 64" x 46" 1625 mm x 1170 mm

Spindle Motor

3.3 HP 2.5kW 3.3 HP 2.5kW

Air Requirements

1 cfm @ 90 - 100 psi 1 cfm @ 90 - 100 psi

Power Requirements 208-240 V, Single Phase 50-60 HZ, 30 Amp 208-240 V, Single Phase 50-60 HZ, 40 Amp

Shipping Weight (excluding Fixtures & Parallels)

3300 lbs 1500 kg 3300 lbs 1500 kg

Four Selectable Feed Rates

.0015, .003, .005, .008 inches

.038, .076, .127, .203 mm per rev.

F8A with

Big Block Merlin

Specifications

Programmable Feed Rates

.001 to .012 inches

.025 to .300 mm per rev.

Features Controls

Handwheel

The F8 machines are the industry standard worldwide.

Designed for all automotive blocks up to big block

V8's and small diesel blocks, the F8 will produce

accurate bores for a lifetime. The F8A is ideal for the

production shop where the odd sleeve must be fitted.

The F8M is the fastest, most powerful boring machine

available to the jobber shop. The simple set up and

manual push button controls make this a very

economical machine to operate.

F8A

Quick change draw bar system

1 2 3 4 5 6 7 8

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Yamaha F8A User Manual Page 7

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