Starrett St-1101 Instruction Manual

REV. A JAN/10

Instruction manual for the installation and
maintenance of band saw machine model:

St-1101

Serial Number:

Date:

REV A JAN/10 1

1 . GENERAL PROVISIONS AND REFERENCES :

1.1 General:

This Instructions Manual consists of 9 Sections containing relevant and
important information to be observed. Such information will be "named” in
accordance with the symbols appearing below in boldface.

WARNING:

Operation, technical and other
procedures likely to cause
physical damages to operator
and/or to equipment;

OBSERVATION:

Operation, technical and other
procedures that must be
emphasized and observed;

ELECTRICAL
INSTALLATION:

Important Electrical Installation
procedures.

For any doubts a user could have on the Starrett machine, the Customer
Service Center, through its Technical Support Service, will be at your disposal to
promptly assist you in your cutting needs.

This Manual presents a serial number that coincides with the machine serial
number. Should you experience any problem within the machine warranty period
please mention this number (See Warranty terms in Section 8).

2 REV A JAN/10

1.2 Figure and Part References:

Figure 01A

REV A JAN/10 3

Figure 01B

4 REV A JAN/10

POS. DESCRIPTION

1

Complete Machine St-1101

2

Latch fastening eyebolt

3

Cutting table

4

Vise clamping and unclamping lever

5

Vise spindle lock lever

6

Saw blade

7

Moving guide-lock lever

8

Vise assembly

9

Blade tension lever

10

Arc

11

Carry handle

12

Motor

13

Magnetic switch (ON/OFF/EMERGENCY)

14

Jaws

15

Arc lock knob

16

Technical directions - technical characteristi cs

17

Technical directions-cutting direction

18

Fixed guide

19

Spring force adjustment handwheel

20

Spring system

21

Drive wheel

22

Motor flywheel locknut

23

Cover

24

Arc lifting cable

25

Idler wheel

26

Moving guide

27

Ball bearings

28

Fixed guide

29

Vise clamping spindle

30

Arc swivel lock bolt

31

Chip collection box

32

Protractor

33

Oil pan lock pin

34

Blade protection case

35

Moving guide support

36

Limit microswitch

37

Microswitch drive pin

38

Tool Panel

39

Technical tension directions

40

Measuring rod

41

Stopper

42

Technical instruction – arc lock

43

Spring setting lock pin

44

Cutting Force Adjustment Scale (L, M, H)

45

Cover lock screw

46

Power cord

47

Starter key cover

48

Arc swivel scale

49

Nameplate

50

Ball bearing fastening screw (27)

REV A JAN/10 5

2 . APPLICATION, GENERAL DESCRIPTION AND

TECHNICAL CHARACTERISTICS:

2.1 Application (adequate use):

T

HE STARRETT–St-1101 HORIZONTAL BAND SAW was developed

to meet the quality, safety, modernity and technology criteria, in response to user
needs, in conformity with CE standards.

This machine is intended for PROFESSIONAL and/or HOBBY, PORTABLE
use, recommended for cutting structural shapes, thin-wall tubes, made of low­carbon ferrous or non-ferrous materials (bronze and aluminum alloys, among
others). The physical characteristics of such materials, such as hardness, tenacity
and density, should pose no safety problems for users during cutting operations.

This equipment IS NOT recommended for cutting materials whose production
volumes are high and continuous, i e., involving several operating hours each day.
In such cases, Starrett recommends one of its other machine models more
specifically developed and designed for large volume cutting operations.

If used in INDUSTRY, the technical characteristics and machine cutting
capability limits shall be complied with (item 2.2 –Technical Characteristics), or else
stand liable for LOSING THE WARRANTY granted by Starrett. If in doubts,
Starrett will be at your disposal for any clarifications.

6 REV A JAN/10

2.2 General Description:

2.2.1 Arc Assembly

The machine comprises of a sturdy Arc (10) provided with 2 Wheels: one
Idler Wheel (25) and one Drive Wheel (21), the latter coupled to a Speed Reducing
Gear. The Idler Wheel (25) is mounted on the shaft of a Saw Blade Tension Device
(09).

A welded Saw Blade (06) is mounted around the two wheels and
conveniently tensioned by the Tensioning Device (09), to keep the blade properly
tensioned by the Wheels (21)(25). The Arc (10), in turn, is mounted on the Vise
Assembly (08) through a shaft that allows the arc to pivot on the saw plane, thus
creating a cutting plane (figure 01A). The Blade (06) and Wheels (21)(25) are duly
protected at the back of Arc (10) by a Protective Cover (23) (figure 02).

In order to move the Arc (10) upwards (figure 04), it should be first
unlocked by the Arc Lock Knob (15).

The machine is so designed as to cause the Arc (10) to swivel around a fixed
point on the Vise Assembly (08), i.e., along a plane at right angles to the Cutting
Table (03), to allow for angular cuts to be made on the material to be cut (figure 10).

The cutting pressure of the Saw Blade (06) on the material is set through a
Spring System (20) (figure 07), which is part of the Arc assembly (10). Such spring
system allows for 3 settings to be available: HIGH (H), MEDIUM (M) and LOW (L),
duly marked on the Wheel (19), as can be seen in figure 08.

The Saw Blade cutting segment (06) is supported by two Guides (26)(28).
Such Guides are provided with Ball Bearings (27), which allow the blade to be
twisted by 45º relative to the rotation plane of Wheels (21) (25), to form the cutting
plane. Such Ball Bearings (27) are intended to align and prevent the Saw Blade (06)
from laterally deflecting around the axis of its track movement. The Moving Guide

REV A JAN/10 7

Support (35), close to the driven Wheel (25), can be manually adjusted by loosening
Knob (07), to set its distance relative to the material to be cut (figure 03).

2.2.2 Vise Assembly

The Vise Assembly (08) (figure 01A) is intended to securely clamp the
material to be cut to the Cutting Table (03) and forms the base of the machine,
made of injected aluminum alloy. Such assembly is comprised of:

- Cutting Table (03);

- Jaws (14);

- Tightening Spindle (29);

- Lever (04).

- Coupling Lock Lever (05).

2.2.3 Electrical System

An Electrical Panel (13A, 13B e 13C) is coupled to the Arc Assembly (10), as
shown in figure 01 A. This electrical system comprises a magnetic ON-OFF switch
that drives the machine (13A, 13B), and a mushroom-type emergency button (13C).
The machine operates on SINGLE PHASE 220V, at 50 or 60 Hz frequencies.

It allows for one single cutting speed, which changes according to the mains
frequency: 45 m/min under 50 Hz or 54m/min under 60 Hz.

8 REV A JAN/10

Figure 02

Figure 03

REV A JAN/10 9

2.2.4 Machine operation:

With the machine duly adjusted, electrically connected, with the material to
be cut properly positioned and locked on the Cutting Table (03) and with the Arc
(10) in its raised position, open the yellow cover containing the Switch Assembly (13
A, B, C) (figures 01, 09), and actuate the green Button ON (13A). Manually position
the Saw Blade (06) over the material to be cut, by means of the Lifting Cable (24).
This operation will start the Saw Blade (06) cutting motion on the material. At the
end of the cutting operation, the Drive Pin (37) will touch the Limit Microswitch (36)
(figure 07), automatically switching off the Electric Motor (12).

For being a portable equipment for professional and/or hobby use, the
STARRETT–St-1101 Horizontal Band Saw Machine does not embody a cooling
system. Therefore, in order to guarantee its safe and quality operation, the operator
must observe the cutting conditions. As an OPTIONAL item, the STARRETT St-
1101 can be provided with a Portable Tubular Table called BPM (see Section 2.4).

NOTE:

The Saw Blade cutting segment (06) (between Guides (26)(28)),
obviously has no protection, being the responsibility of the
machine operator to act carefully and taking the necessary
precautions.

All necessary details of the systems comprising this machine will be
described in their relevant Sections.

10 REV A JAN/10

Figure 04

Figure 05

REV A JAN/10 11

2.3 Technical Characteristics:

Net Weight (kg): 23
Dimensions (m): 0.73 x 0.38 x 0.46 (height)
Main Motor (HP / KW) 0.5 / 0.37
Saw Speed (m/min): 45 (under 50 Hz)

54 (under 60 Hz)
Saw Blade Dimensions (mm): 1470 ( ± 2 ) x 13 x 0.50 or

1470 ( ± 2 ) x 13 x 0.65 (*)
Single phase voltage (V): 220
Motor operating frequency (Hz): 50 or 60
Permissible Cutting Sizes (mm):

(*) the St-1101 comes equipped and adjusted with a 0.50-thick band saw blade. If willing to fit it with
a 0.65mm-thick blade, please refer to the instructions in item 4.6.

The St-1101 IS NOT provided with a cooling system.

This is a DRY cut-off machine.

2.4 Optional:

BPM – Portable Tubular Table

1 - Structural tubes and shapes 2 – Solid

W x H

W x H