B20-CRT_US-EN

BORING | Criterion® Modular Boring Systems

Setup Instructions | Standard Adjusting Boring Heads

A

Adjusting Standard Adjusting Boring Heads (see figure B1) 1. Loosen locking screw (6). 2. Turn dial screw (3) to desired graduation.

DRILLING

3. Tighten locking screw (6) to proper torque spec (laser marked on tool). IMPORTANT: Do not loosen the gib screws (5). It can cause poor performance. NOTE: To machine smaller bore diameters, turn dial screw (3) counterclockwise one full rotation to remove any backlash. Once backlash is mitigated, turn dial screw (3) clockwise to desired graduation.

B

BORING

5

No. Part 1

Bar holder

2 3 4 5 6

Boring head body

3 2

Dial screw

Bar holder set screws

6

Gib screws (DO NOT ADJUST)

C

5

Locking screw

REAMING

1

4

Figure B1

D

BURNISHING

E

THREADING

X

B20: 58 - 59

B20: 54 - 55

SPECIALS

Key on B20: 1

B20: 54

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