Every Week; Wear Limits; Replacing The Working Tool Bushing; Every Year - Atlas Copco SB Serie Instrucciones De Seguridad Y De Funcionamiento

Safety and operating instructions

Every week

1. Clean the hydraulic breaker carefully.
2. Check the tool bushing wear and maximum inner

wear limits.

A
The tool bushing must be replaced when the
inner diameter (A) has reached its maximum
wear limit, see "Wear limits" and "Replacing the
working tool bushing".
3. Check the working tool for wear.
B
The working tool must be replaced when the
outer diameter (B) has reached its minimum wear
limit. See "Wear limits".
Too big a clearance can make the working tool
break and the piston can be damaged.
4. Check the breaker body and the adapter plate
for cracks and wear.
5. Check that the accumulator screws are properly
tightened. Correct tightening torque is found in
the spare parts list.
The working tool may never be sharpened by forging.
Sharpening should only be performed by milling,
grinding or turning.
Wear limits
A mm (in.)
SB 52 42 (1.6)
SB 102 47 (1.8)
SB 152 52 (2.0)
SB 202 68 (2.7)
SB 302 83 (3.3)
SB 452 98 (3.85)
SB 552 103 (4.1)
20

Replacing the working tool bushing

The working tool bushing is kept in place by the tool
retainers. A new bushing has a slip fit.
1. If a worn out bushing is stuck, use a sliding
2. Carefully clean the bore and the bushing seat
3. Mount new O-rings, lubricate and mount the
4. Use a plastic sledgehammer to insert the
5. Keep the bushing in position with help of the tool
6. Mount a new scraper ring.

Every year

B mm (in.)
38 (1.5)
Overhauling should be done after 1 year of
continuous operation. Overhauling should for safety
43 (1.7)
reasons be performed by authorised personnel at
48 (1.9)
the nearest Atlas Copco workshop or by other Atlas
63 (2.5)
Copco authorised workshops.
78 (3.1)
92 (3.6)
97 (3.8)
© 2008 Atlas Copco Construction Tools AB | No. 9800 0648 90e | 2008-11-03
SB 52, 102, 152, 202, 302, 452, 552
hammer to remove it.
area.
bushing.
bushing.
retainers.