Fixing Elements - ABB A238-H Series Original Assembly Instructions

Assembly Instructions / A200-H
4 Installing the turbocharger / 4.2 Fixing elements
4.2

Fixing elements

The standard nuts (01), washers (02), threaded rods (03) and centering bushes (04) are not
supplied by ABB. The clamping nut (42201) can be ordered as an option. This enables the re-
quired pre-tension to be achieved with a commercially available torque spanner.
Variant with standard nut
Table 6: Overview of the fastening variants
Requirements for washers (02)
¡
Use hardened washers
¡
Thickness ≥ 15% of nominal thread diameter
Requirements for threaded rods (03)
Product
A238-H
A240-H
Table 7
Requirements for centering bushes (04)
Strength class: 10.9 (DIN EN ISO 898-1)
Fig. 6: Drawing of centering bush
Product External diameter d
A238-H 26 +0.0 / -0.02 mm
Chamfer: 1 mm x 45°
A240-H 30 +0.0 / -0.02 mm
Chamfer: 1 mm x 45°
Table 8: Dimensions of the centering bushes (04)
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Variant with clamping nut
Thread size
M20
M24
Internal diameter d
a
HZTL455311P0042_EN
Length [mm]
≥ 380 mm
≥ 380 mm
i
M20
M24
Rev.A
Length H
18 mm
20 mm
September 2021