Z series

Straight bore mounting

Pos. in hub	ø Bore	Hub
No.	Min-Max	Max l *	d2	d3	d4	n **
5	12,0 - 24,0	42	44	55	139	5
5	18,5 - 22,0	18	40	55	139	5
5	12,0 - 29,0	82	52	55	139	5
6, 7, 8, 9, 12, 16	9,5 - 15,0	31	28	75	90	5
6, 7, 8, 9, 12, 16	12,5 - 22,0	42	40	75	90	5
6, 7, 8, 9, 12, 16	22,0 - 25,0	52	45	75	90	5
6, 7, 8, 9, 12, 16	22,0 - 28,0	62	51	75	90	5
6, 7, 8, 9, 12, 16	27,0 - 40,0	82	73	75	90	5
6, 7, 8, 9, 12, 16	40,0 - 48,0	112	90	75	90	10

* To obtain a longer boss length it is possible to add a boss extension. Universal boss extensions are available in lengths of 10mm, 20mm and 40mm, and can be combined to a given length.
** n is the number of bolts in the bolt circle d4

If the diameter of your desired aluminium impeller exceeds ø750mm and your desired bore exceeds ø38, we use bosses from the W-series as standard.

Technical information on our 5 bladed hubs (PDF)
Technical information on our casted bosses (PDF)

Conical bore

If you need a conical bore, please contact your local distributor.
In order to identify a conical bore the following information is required:

Bore (i.e. ø16)		Cone (i.e. 1:5)
Cone Length (i.e. 22mm)		l (i.e. 62mm)
		Counterbore (i.e. ø36)