SPX Cooling Technologies TG MAG185-125 Mass moment of inertia, Axial and radial clearances

3.11 Mass moment of inertia

TG MAG pump size	15-50	23-65	58-80	86-100	185-125
J (10-3 x kgm²)	3.5	6.8	32	54	200

Outer parts

Inner parts

Inner parts:

Idler

Rotor shaft

Axial rotor bearings

Shaft sleeve

Inner magnetic rotor

Outer parts:

Pump shaft

Outer magnetic rotor

			Mass moment of inertia J [ 10-3x kgm2]
TG MAG	outer parts per lenght of magnets				inner parts per lenght of magnets
type	40/60		100	120	40/60	80	100	120
		80
15-50	22	26	-	-	8	9	-	-
23-65	22	26	-	-	10	12	-	-
58-80	66	80	93	-	46	52	58	-
86-100	72	85	99	-	65	70	76	-
185-125	248	303	358	413	230	247	264	280

3.12 Axial and radial clearances

			TG MAG pump size
		15-50	23-65	58-80	86-100	185-125
radial clearance	max (µm)	310	320	370	380	420
	min (µm)	250	260	300	300	340
axial clearance	max (µm)	200	215	250	275	320
	min (µm)	120	125	150	165	190

3.13 Extra clearances

To handle extra clearances following clearance classes are defined:

C0	=	Pump cover axial clearance set at minimum
C1	=	Standard clearance (not indicated because standard)
C2	=	~2 x standard clearance
C3	=	3 x standard clearance

To indicate required clearances a code of 4 digits, xxxx, is given on the order. The figure ‘‘1’’ stands always for ‘‘normal’’ and no special action is considered.

The indicated numbers in the tables below are average values in microns (µm).

20 A.0500.551 – IM-TGMAG/02.00 EN (02/2008)