HM 20 - HM 30 - SCHENCK USA

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Universally applicable
High balancing accuracy
Easy upgrading through modular structure and a wide range of accessories
Hard-bearing principle ensures fast change-over
Measuring instrument CAB 820, optional CAB 920 - the high end solution
Extensive safety equipment for all protection classes

Special features

Easy to operate – hard-bearing principle eliminates the need for calibration runs
Provides for correction in two planes or separate according to static and couple unbalance
Rotors can be mounted on their original shafts or on mounting arbors, optionally with mounted anti-friction bearings
Angle indexing display in case of belt drive
Automatic measuring cycle with infinitely variable settings for acceleration, measuring and braking time
Upgradeable by many additional modules e.g. for mass correction

Design

Range of application

Universal balancing machines series HM enable precise balancing of a wide spectrum of rotors. They are suitable for cylindrical rotors having their own shaft journals and for balancing disc shaped rotors on balancing arbors.

Permanent calibration, ergonomic design and a logical operating sequence facilitate operation.

A modular design principle and a wide range of accessories make the machine highly flexible.

Schenck universal balancing machines series HM are a highly efficient investment, both for one-off rotors and for small batches.

Sequence of operations

Manually load work-piece on the bearing pedestals, close hold-down bearings and connect drive (belt drive or drive shaft).
Close protection device and start automatic measuring sequence:
Acceleration, determination and display of the unbalance on the measuring instrument, brake. The readout is retained on the measuring instrument even after the measuring run has ended.
Open protection device, manually correct unbalance (if required).
Check correction result (with measuring instrument displaying whether the tolerance has been achieved) and unload the rotor from the machine.

Technical data

Technical data at a glance		HM 20	HM 3	HM 30
Measuring unit		CAB 820	CAB 820	CAB 820
Roller carriages		•	•	•
Underslung belt drive BU		•	•	•
End drive ²⁾			•	•
Protective device as per ISO 7475 ⁵⁾		•	•	•
Rotor
Weight, max.	[kg]	100	300	700
Diameter, max.	[mm]	1260	1260	1260
Bearing distance, max. ²⁾	[mm]	1330	1330	1330
Bearing journal diameter ²⁾	[mm]	9 - 140	9 - 140	10 - 160
Machine
Width A ¹⁾	[mm]	2250	2250	2250
Depth B ¹⁾	[mm]	1650	2250	2250
Height C ¹⁾	[mm]	2000	2000	2000
Balancing speed, min.	[min -1]	120	120	120
MARU ⁴⁾	[gmm]	1,6	2,0	3,0
Air pressure	[kPa]	-	600	600
Power supply ³⁾	[V]	400 ³⁾	400 ³⁾	400 ³⁾
Drive power	[kW]	1,1	2,2	2,2
Sound Pressure Level (with belt drive)	[LpA [dB(A)]]	60 - 70	60 - 70	60 - 70

Basic machine	Order-Nr.	R0060400.02	R0060500.02	R0060600.02
Options
Measuring unit CAB 920	Order-Nr.	R0060401.01	R0060501.01	R0060601.01
Software options		o.r.	o.r.	o.r.
Angular roller bearings		•	•	•
Overslung belt drive BK		•	•	•
Various roller carriages		o.r.	o.r.	o.r.
Report printer	Order-Nr.	R0060405.01	R0060505.01	R0060605.01
Mass correction system	Order-Nr.	o.r.	o.r.	o.r.

1) Data non-binding, depending on the respective equipment
2) Other data upon request
3) Mains configuration: 3 / PE AC 500Hz 400 V +6 / -10%
4) Minimum achievable residual anbalance per balancing plane
5) Up to HM 10 with protection class C, in all other cases protection class B
o.r. On request