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Home  >>  Products  >>  Dispersion  >>  Laboratory Stirring Systems & Precision Stir-Testers

Laboratory Stirring Systems


G. K. Heller stirring systems offer a wide range of features and capabilities including:

  • Feedback circuitry on all models to maintain speed even when viscosity changes
  • Standard horsepower ratings from 1/40 to 1/4 horsepower. Has 50/60 Hz operation
  • A selection of propellers & paddles from 1-1/2" to 6" diameter
  • Reference circuitry maintains speed even with voltage fluctuations of ±10%
  • Cord connections between drive motors & controls increase convenience & allow placement away from hostile environments

G.K. Heller stirrers filter the drive current for better performance featuring:

  • This filtering process eliminates the objectionable pulsing action common to unfiltered DC current
  • Reduces motor heating
  • Allows the use of a smaller motor for the same power rating
  • Ensures smooth rotation for precise stirring
  • Lengthens motor brush life
  • Prevents demagnetization of permanent-magnet motor fields

 

GT31 Stirring System

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A favorite with chemists and lab technicians everywhere. Totally enclosed, 1/40 hp, permanent magnet motor with two output shafts for maximum speeds of 4,000 and 333 rpm. The armature shaft provides high speeds for mixing light materials, while the geared shaft generates 3.6 lb. - in. (4.2 kg-cm) of torque at slower speeds for stirring more viscous mixtures. Continuously variable speed control.

GT31

 

GT24 Stirring System

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Combines today's permanent-magnet motor technology with solid state electronics. Totally enclosed, 1/17 hp, cool, and quiet-running motors with direct-drive and geared options. Models available with speeds up to 2,500 rpm and torques up to 12 lb. - in. (13.8 kg-cm). Continuously variable speed control.


GT24

 

Prices

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Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Catalog No. Motor Type Input Voltage Max. rpm Torque Prices
lb-in. kg-cm
GT31 1/40 hp Stirring System
MX-GT31 Dual-shaft 18:1 gearmotor 120 333/4,000 3.6/.26 4.2/.3 $1,150.80
GT24 1/17 hp Stirring System
MX-GT2406 Single-shaft 6:1 gearmotor 120 417 5.4 6.2 1,491.00

 

 

Precision Stir-Testers

Dust on Steel Assessment Equipment & Test for Cleanliness and CTR Laboratory stirring speed and torque measurement is easier and more precise with the Glas-Col/G.K. Heller HST Series stir testers:
  • Actual speeds are displayed and maintained by a synthetic tachogenerator. (Speed is kept within less than 1% of the base speed from no load to more than 100% of full load regardless of AC line voltage fluctuations of ±10%.)
  • Viscosity measurement is easier thanks to a controller with a digital readout switchable between speed and torque.
  • Data on shear stress, shear rate, velocity gradients, and viscosity is accumulated easily with external DC voltage signals for speed and torque (for strip or X-Y recorders) available through an output port on the rear of the control.
  • Operator convenience and safety is increased with cord connections between drive motors and controls to allow control placement away from hostile environments.

 

HST30 Series Stir-Tester

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1/4 hp, totally enclosed, permanent-magnet DC motor. Direct drive model provides speeds up to 2,500 rpm and 6.3 lb. - in. (7.3 kg-cm) of torque for more viscous applications. A variety of gearing options allow for even higher torque output (up to 90 lb. - in.) without putting undue stress on the motor.

HST30

 

Prices

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Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Catalog No. Motor Type Input Voltage hp Max RPM Torque Prices
lb-in. kg-cm
HST10 1/17 hp Series Stir-Tester
MX-HST10N Direct drive; rpm/torque readout & X-Y output 120 1/17 2,500 1.5 1.73 $2,055.00
MX-HST1006 Similar to HST10N but with 6:1 gearmotor 120 1/17 417 5.4 6.22 2,055.00
MX-HST1012 Similar to HST10N but with 12:1 gearmotor 120 1/17 208 12.0 13.8 2,055.00
MX-HST210N Direct drive; rpm/torque readout & X-Y output 208-240 1/17 2,500 1.5 1.73 2,285.00
MX-HST210-6 Similar to HST210N but with 6:1 gearmotor 208-240 1/17 417 5.4 6.22 2,622.00
MX-HST210-12 Similar to HST210N but with 12:1 gearmotor 208-240 1/17 208 12.0 13.8 2,622.00
HST20 1/8 hp Series Stir-Tester
MX-HST20N Direct drive; rpm/torque readout & X-Y output 120 1/8 2,500 3.6 3.57 $2,631.00
MX-HST20-4 Similar to HST20N but with 4:1 gearmotor 120 1/8 660 6 6.9 2,639.00
MX-HST20 Similar to HST20N but with 9:1 gearmotor 120 1/8 266 21 24.2 2,639.00
MX-HST20-21 Similar to HST20N but with 21:1 gearmotor 120 1/8 125 46 53 2,639.00
MX-HST2044 Similar to HST20N but with 44:1 gearmotor 120 1/8 57 96 111 2,813.00
MX-HST220N Direct drive; rpm/torque readout & X-Y output 208-240 1/8 2,500 3.6 3.57 2,681.00
MX-HST220-4 Similar to HST220N but with 4:1 gearmotor 208-240 1/8 660 6 6.9 2,976.00
MX-HST220 Similar to HST220N but with 9:1 gearmotor 208-240 1/8 266 21 24.2 2,976.00
MX-HST220-21 Similar to HST220N but with 21:1 gearmotor 208-240 1/8 125 46 53 2,976.00
MX-HST220-44 Similar to HST220N but with 44:1 gearmotor 208-240 1/8 57 96 111 3,031.00
HST30 1/4 hp Series Stir-Tester
MX-HST30N Direct drive; rpm/torque readout & X-Y output 120 1/4 2,500 6.3 7.3 $2,966.25
MX-HST230N Direct drive; rpm/torque readout & X-Y output 240 1/4 2,500 6.3 7.3 3,033.45


Accessories

Propellers & Paddles

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Propellers

 

Collets & Chucks

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Chucks Chucks


Lab Stands, Motor-Mounting Brackets & Clamps

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Lab Stand

 

Prices

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Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item No. Item Shaft Length Prices

Propellers

MX-A100103 Stainless steel, 4-bladed propeller 1-1/2" (38 mm) diameter on 1/4" diameter (6.4mm) shaft 9 in (229 mm) 113.40
MX-A100104 12 in (305 mm) 117.60
MX-A130153 Stainless steel, 4-bladed propeller 2" (50.8 mm) diameter on 1/4" diameter (6.4 mm) shaft 9 in (229 mm) 132.30
MX-A130154 306 in (12 mm) 145.95
Lab Stands, Motor-Mounting Brackets & Clamps
MX-A130150 Heavy-duty lab stand with 3/4" (19mm) diameter, 28" length nickel-plated mast. Cast iron base with 1/2" 13 threaded holes for additional rods. Accommodates containers up to 16" (406mm) diameter. Weight, 12 lbs. (5.4 kg) 30 in (762 mm) 340.20



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