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| Laboratory Stirring Systems |
| G. K. Heller stirring systems offer a wide range of features and capabilities including: |
G.K. Heller stirrers filter the drive current for better performance featuring: |
- 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
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- 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
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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.
The GT31 stirring system is furnished complete with motor and mounting bracket, controller, and the following accessories: |
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- MX-A210101 3-jaw, keyless chuck
- MX-A210106 paddle
- MX-A210107 propeller
- MX-A283040 right angle clamp
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| Lab stand, MX-A130150, is recommended to mount the GT31 but not included with the System. |
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.
The GT24 stirring system is furnished complete with motor, mounting bracket, controller, and the following accessories:
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- MX-A210106 paddle
- MX-A210107 propeller
- MX-A210101 3-jaw keyless chuck (with GT24N and GT224N only)
- MX-A260108 3-jaw keyless chuck and arbor (with GT2406, GT22406, GT2412 and GT22412 only)
- MX-LC300 heavy-duty 90° clamp
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| Lab stand, MX-A130150, is recommended to mount the GT24 but not included with the System. |
ST-20 Stirring System
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| A powerful stirring outfit. Totally enclosed, 1/8 hp, cool, quiet-running, permanent magnet motor in direct and gear-drive models with torques from 3.1 lbs.- in. (3.57 kg-cm) to 96 lb. - in. (111 kg-cm). Provides a stirrer with more power than the 6T60 and a selection of speed ranges up to 2,500 rpm. Continuously variable speed control.
The ST20 stirring system is furnished complete with motor and mounting bracket, controller, and the following accessories:
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- MX-A260100 3-jaw, keyless chuck and arbor for ST20N and ST220N only
- MX-A260200 3-jaw, keyless chuck and arbor for ST20 geared models
- MX-A260106 propeller
- MX-LC300 heavy-duty 90° clamp
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| Lab stand, MX-A130150, is recommended to mount the ST-20 but not included with the System. |
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. |
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| 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 |
$1,064.00 |
| MX-GT331 |
Dual-shaft 18:1 gearmotor |
240 |
333/4,000 |
3.6/.26 |
4.2/.3 |
1,185.00 |
| GT24 1/17 hp Stirring System |
| MX-GT24N |
Single-shaft, direct drive |
120 |
2,500 |
1.5 |
1.7 |
$1,135.00 |
| MX-GT2406 |
Single-shaft 6:1 gearmotor |
120 |
417 |
5.4 |
6.2 |
1,379.00 |
| MX-GT2412 |
Single-shaft 12:1 gearmotor |
120 |
208 |
12 |
13.8 |
1,379.00 |
| MX-GT224N |
Single-shaft, direct drive |
240 |
2,500 |
1.5 |
1.7 |
1,216.00 |
| MX-GT22406 |
Single-shaft 6:1 gearmotor |
240 |
417 |
5.4 |
6.2 |
1,482.00 |
| MX-GT22412 |
Single-shaft 12:1 gearmotor |
240 |
208 |
12 |
13.8 |
1,482.00 |
| ST-20 1/8 hp Stirring System |
| MX-ST20N |
Single-shaft, direct drive |
120 |
2,500 |
3.1 |
3.57 |
$1,866.00 |
| MX-ST2004 |
Single-shaft 4:1 gearmotor |
120 |
660 |
6 |
6.9 |
1,922.00 |
| MX-ST20 |
Single-shaft 9:1 gearmotor |
120 |
266 |
21 |
24.2 |
1,922.00 |
| MX-ST2021 |
Single-shaft, 20:1 gearmotor |
120 |
125 |
46 |
53 |
1,922.00 |
| MX-ST2044 |
Single-shaft 44:1 gearmotor |
120 |
57 |
96 |
111 |
2,102.00 |
| MX-ST220N |
Single-shaft, direct drive |
240 |
2,500 |
3.1 |
3.57 |
1,934.00 |
| MX-ST22004 |
Single-shaft 4:1 gearmotor |
240 |
660 |
6 |
6.9 |
2,097.00 |
| MX-ST220 |
Single-shaft 9:1 gearmotor |
240 |
266 |
21 |
24.2 |
2,097.00 |
| MX-ST22021 |
Single-shaft 20:1 gearmotor |
240 |
125 |
46 |
53 |
2,097.00 |
| MX-ST22044 |
Single-shaft 44:1 gearmotor |
240 |
57 |
96 |
111 |
2,296.00 |
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| 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.
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HST10 Series Stir-Tester
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| Totally enclosed, 1/17 hp, permanent-magnet DC motor. Direct-drive model provides 20 to 2,500 rpm and 1.5 lb-in. torque (1.73 kg-cm). The HST10 is available in direct-drive and geared models in 6:1 and 12:1 ratios for max. speeds/torques of 417 rpm/5.4 lb-in. (6.2 kg-cm) and 208 rpm/12.0 lb. - in. (13.8 kg-cm) respectively.
The HST10 includes the drive motor with mounting bracket, controller, and the following accessories: |
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- MX-A210101 3-jaw keyless chuck and arbor (with HST10N and HST210N)
- MX-A260108 3-jaw keyless chuck and arbor (for HST10 geared motors)
- MX-A210106 paddle
- MX-A210107 propeller
- MX-LC300 heavy duty 90° clamp
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| Lab stand, MX-A130150, is recommended to mount the HST10 but not included with the System |
HST20 Series Stir-Tester
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| 1/8 hp, totally enclosed, permanent-magnet DC motor. Direct-drive model provides speeds up to 2,500 rpm and 3.6 lb. - in. (3.6 kg-cm) of torque. Geared model HST20 gives 2 to 266 rpm and torque of 21 lb. - in. (24.2 kg-cm).Other models
provide torques up to 96 lb. - in. (111 kg-cm).
The HST20 offers the outputs and speed maintaining
capability of the HST10 series along with increased stirring power for more difficult laboratory applications.
The HST20 includes the drive motor with mounting bracket, controller, and the following accessories:
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- MX-A260100 3-jaw keyless chuck and arbor (HST20N and HST220N only)
- MX-A260106 propeller
- MX-LC300 heavy duty 90° clamp
- MX-A260200 3-jaw keyless chuck and arbor for HST20 geared motors
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| Lab stand, MX-A130150, is recommended to mount the HST20 but not included with the System |
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.
The HST30 includes the motor with mounting bracket, controller,
and the following accessories:
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- MX-A260108 3-jaw keyless chuck and arbor (with HST30N and HST230N)
- MX-A260275 3-jaw keyless chuck and arbor (for HST30 geared motors)
- MX-A260106 propeller
MX-LC300 heavy duty 90° clamp
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| Lab stand, MX-A130150, is recommended to mount the HST30 but not included with the System |
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. |
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| 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 |
$1,995.00 |
| MX-HST1006 |
Similar to HST10N but with 6:1 gearmotor |
120 |
1/17 |
417 |
5.4 |
6.22 |
1,995.00 |
| MX-HST1012 |
Similar to HST10N but with 12:1 gearmotor |
120 |
1/17 |
208 |
12.0 |
13.8 |
1,995.00 |
| MX-HST210N |
Direct drive; rpm/torque readout & X-Y output |
208-240 |
1/17 |
2,500 |
1.5 |
1.73 |
2,218.00 |
| MX-HST210-6 |
Similar to HST210N but with 6:1 gearmotor |
208-240 |
1/17 |
417 |
5.4 |
6.22 |
2,546.00 |
| MX-HST210-12 |
Similar to HST210N but with 12:1 gearmotor |
208-240 |
1/17 |
208 |
12.0 |
13.8 |
2,546.00 |
| 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 |
$2,554.00 |
| MX-HST20-4 |
Similar to HST20N but with 4:1 gearmotor |
120 |
1/8 |
660 |
6 |
6.9 |
2,562.00 |
| MX-HST20 |
Similar to HST20N but with 9:1 gearmotor |
120 |
1/8 |
266 |
21 |
24.2 |
2,562.00 |
| MX-HST20-21 |
Similar to HST20N but with 21:1 gearmotor |
120 |
1/8 |
125 |
46 |
53 |
2,562.00 |
| MX-HST2044 |
Similar to HST20N but with 44:1 gearmotor |
120 |
1/8 |
57 |
96 |
111 |
2,731.00 |
| MX-HST220N |
Direct drive; rpm/torque readout & X-Y output |
208-240 |
1/8 |
2,500 |
3.6 |
3.57 |
2,603.00 |
| MX-HST220-4 |
Similar to HST220N but with 4:1 gearmotor |
208-240 |
1/8 |
660 |
6 |
6.9 |
2,889.00 |
| MX-HST220 |
Similar to HST220N but with 9:1 gearmotor |
208-240 |
1/8 |
266 |
21 |
24.2 |
2,889.00 |
| MX-HST220-21 |
Similar to HST220N but with 21:1 gearmotor |
208-240 |
1/8 |
125 |
46 |
53 |
2,889.00 |
| MX-HST220-44 |
Similar to HST220N but with 44:1 gearmotor |
208-240 |
1/8 |
57 |
96 |
111 |
2,943.00 |
| 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 |
$2,743.00 |
| MX-HST3005 |
Similar to HST30N but with 5:1 gearmotor |
120 |
1/4 |
500 |
25 |
28.8 |
2,928.00 |
| MX-HST3010 |
Similar to HST30N but with 10:1 gearmotor |
120 |
1/4 |
250 |
45 |
51.8 |
2,930.00 |
| MX-HST3020 |
Similar to HST30N but with 20:1 gearmotor |
120 |
1/4 |
125 |
90 |
103.7 |
2,930.00 |
| MX-HST230N |
Direct drive; rpm/torque readout & X-Y output |
240 |
1/4 |
2,500 |
6.3 |
7.3 |
2,805.00 |
| MX-HST23005 |
Similar to HST30N but with 5:1 gearmotor |
240 |
1/4 |
500 |
25 |
28.8 |
2,978.00 |
| MX-HST23010 |
Similar to HST30N but with 10:1 gearmotor |
240 |
1/4 |
250 |
45 |
51.8 |
2,978.00 |
| MX-HST23020 |
Similar to HST30N but with 20:1 gearmotor |
240 |
1/4 |
125 |
90 |
103.7 |
2,978.00 |
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Heavy-Duty 90-Degree Clamp
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| This new clamp provides secure, reliable, and easy support of lab equipment. The 90-Degree Clamp is designed to be easier and more user-friendly than most common laboratory clamps.
Equipment adjustments that used to take three hands, pliers, and lots of patience can now be done easily in a few seconds. The triangular knobs fit comfortably in the hand and are large enough so that hand tightening applies sufficient pressure to hold rods securely. Both knobs are located on the same side of the clamp so that switching hands or awkward hand positions during equipment adjustments are eliminated. The Heavy-Duty Clamp may be used on conventional round support rods from 1/2" to 3/4" diameter. It is especially designed for use with the new antirotational octagonal rods. |
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Propellers & Paddles
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Collets & Chucks
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Lab Stands, Motor-Mounting Brackets & Clamps
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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. |
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| Item Number |
Item |
Prices |
| MX-LC300 |
Heavy-duty 90-Degree Clamp |
$120.00 |
| Item No. |
Item |
Shaft Length |
Prices |
Propellers |
| MX-A260106 |
Heavy-duty, stainless steel, 3-bladed propeller 6" (152 mm) diameter on 1/2" diameter (12.7 mm dia) shaft |
12 in (305 mm) |
$299.00 |
| MX-A210107 |
Stainless steel, 3-bladed propeller 1-1/2" (38 mm) diameter on 5/16" diameter shaft with MX-A210105 5/16" (7.9 mm) coupling |
8-3/4 in (222 mm) |
113.00 |
| MX-A210119 |
12 in (305 mm) |
141.00 |
| MX-A210121 |
18 in (457 mm) |
135.00 |
| MX-A100103 |
Stainless steel, 4-bladed propeller 1-1/2" (38 mm) diameter on 1/4" diameter (6.4mm) shaft |
9 in (229 mm) |
105.00 |
| MX-A100104 |
12 in (305 mm) |
109.00 |
| MX-A100105 |
18 in (457 mm) |
117.00 |
| MX-A130153 |
Stainless steel, 4-bladed propeller 2" (50.8 mm) diameter on 1/4" diameter (6.4 mm) shaft |
9 in (229 mm) |
122.00 |
| MX-A130154 |
306 in (12 mm) |
135.00 |
| MX-A130155 |
18 in (457 mm) |
140.00 |
| Paddles |
| MX-A210106 |
Stainless steel, 3-bladed paddle 2-1/2" (63.5mm) diameter on 5/16" diameter (8mm) shaft with MX-A210105 5/16" (8mm) coupling |
8-3/4 |
222 |
122.00 |
| MX-A210109 |
12 |
305 |
141.00 |
| MX-A210120 |
18 |
457 |
176.00 |
| MX-A219106 |
MX-A210106 paddle with Teflon coating |
8-3/4 |
222 |
199.00 |
Collets and Chucks |
| MX-A210101 |
3-jaw keyless chuck with arbor for 5/16" (8mm) motor shaft |
3/8 in (9.5 mm) |
$153.00 |
| MX-A260100 |
Precision 3-jaw keyless chuck w/arbor for 3/8" (9.5mm) motor shaft |
1/2 in (12.7 mm) |
296.00 |
| MX-A260108 |
Precision 3-jaw keyless chuck w/arbor for 1/2" (12.7 mm) motor shaft |
297.00 |
| MX-A260200 |
Precision 3-jaw keyless chuck w/arbor for 5/8" (15.9 mm) motor shaft |
297.00 |
| MX-A260275 |
Precision 3-jaw keyless chuck w/arbor for 3/4" (19 mm) motor shaft |
297.00 |
| Flexible Shafts |
| MX-A210312 |
for 5/16" (8mm) shaft, 5/16" end fitting |
36 in (914 mm) |
608.00 |
| MX-A260375 |
for 3/8" (9.5mm) shaft, 5/16" end fitting |
487.00 |
| MX-A260500 |
for 1/2" (12.7mm) shaft, 5/16" end fitting 36 |
1,138.00 |
| MX-A260625 |
for 5/8" (15.9mm) shaft, 5/16" end fitting |
1,247.00 |
| Lab Stands, Motor-Mounting Brackets & Clamps |
| MX-L70 |
Horseshoe-base laboratory stand with 11/16" (17mm) diameter aluminum mast. Accepts containers up to 9" (229mm) diameter. |
24 in (610 mm) |
$279.00 |
| MX-A130150 |
Heavy-duty lab stand with 3/4" (19mm) diameter 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) |
315.00 |
| MX-A283040 |
Right-angle clamp, for up to 3/4" (19mm) diameter rods. Motor-mounting bracket with rod for HST20 series motor. |
8 in (203 mm) |
64.00 |
| MX-A280104 |
| Miscellaneous Accessories |
| MX-A052060 |
Plug and extension cable for X-Y output of HST10 and HST20 36 914 |
80.00 |
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