ABB A238-H Series, Оригинальная инструкция по сборке

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Assembly Instructions / A200-H
4 Installing the turbocharger / 4.2 Fixing elements
© Copyright 2021 ABB. All rights reserved. HZTL455311P0042_EN Rev.A September 2021
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 Variant with clamping 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 Thread size Length [mm]
A238-H M20 ≥ 380 mm
A240-H M24 ≥ 380 mm
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
a
Internal diameter d
i
Length H
A238-H 26 +0.0 / -0.02 mm
Chamfer: 1 mm x 45°
M20 18 mm
A240-H 30 +0.0 / -0.02 mm
Chamfer: 1 mm x 45°
M24 20 mm
Table 8: Dimensions of the centering bushes (04)
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