Hydraulic unit for traction-controlled motor vehicle brake systems

A hydraulic unit (12) for traction-controlled motor vehicle brake systems, comprising

• a valve block (11) of a light metal with at least one stepped receiving bore (15) for a hydraulic portion (13) of an electromagnetically actuated valve (10), said hydraulic portion includes a thin walled guide sleeve (19),
• a bushing (29), said bushing (29) includes a securing flange (30), disposed on the thin walled guide sleeve (19) of the hydraulic portion (13), said bushing is inserted into said receiving bore (15) and includes a bottom surface which seats on a step (46) of the receiving bore (15) and is positionally secured by caulking (48) of the light metal of the valve block (11),
• a pressure-tight valve dome (16) is secured to said thin walled guide sleeve, said pressure-tight valve dome (16) contains magnetically operative elements including an armature (23) and a magnet core (24) of the hydraulic portion (13), and which in an extension of the receiving bore (15) said valve dome (16) extends beyond a boundary plane (17) of the valve block (11),
• and an electric-magnetic portion (14) of the valve (10) is mounted on and surrounds the valve dome (16), said electric-magnetic portion includes an electric coil (51) that surrounds the valve dome and the electric coil is surrounded by a magnetic flux-conducting housing (52) that conducts a magnetic flux to said armature.