Sentry
Company
62 Main Street
Foxboro, MA 02035
Phone: (508) 543-5391
Fax:
(508) 543-1484
E-mail
us for pricing
or information
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Dual
Heat Treating Furnaces
Model AY/HT Dual Heat Treating Furnaces
Sentry
Dual Furnaces...
Much More Furnace in Much Less Space
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Sentry
dual furnaces offer interchangeability and a host of options The
Model HT Furnace can be combined with the Model AY Furnaces. Separate
units are pedestal mounted and some sizes are available for bench
mounting.
Space-saving
Sentry Dual Furnaces offer the advantages of the dual furnace design
without sacrificing the ability to obtain high quality heat treating
results.
The Model AY Furnace features the Diamond Block atmosphere for scale-free,
decarburization-free hardening of all types of tool steels. The Model HT Furnace
features a recirculating air system for thermal efficiency and improved temperature
uniformity.
Furnaces Sold Separately or Dual Furnace Design

Model AY furnaces feature the Diamond Block Atmosphere for simplified
protection of tool steels during hardening and are designed for exceptional
temperature uniformity and performance. Rugged industrial construction assures
long life and low maintenance.
Features:
- Furnace
can accommodate simplified and effective atmosphere control with
the Diamond Block atmosphere.
- Work
chamber formed by a full high heat conducting muffle. The muffle
eliminates direct radiation from heating elements and dampens
temperature fluctuations to provide unified temperature in the
work area.
- Heating
elements are located above and below the work chamber and are
spaced to control heat distribution.
- Recessed
door construction eliminates cold throat condition and increases
the usable work area.
- 6
AY door, made of cast iron and refractories, is fully recessed
into the furnace. Hand actuated lever operates pneumatic lift
assembly. All AY doors can be elevated to any variable height
setting.
- Furnaces
designed for fast heating. Heavily insulated for continuous operation
up to 2500 Degrees F. Plus low heat storage insulation...ideal
for intermittent use.
Sentry
AY Furnace Operating Characteristics & Specifications
(all sizes 240 or 480 volts, 60 Hertz, 3
phase )
| Size & Model |
2AY |
3AY |
4AY |
5AY |
6AY |
Work
Chamber
(Fully Useable) |
Wide |
4
1/2" |
9" |
6
1/8" |
9" |
12" |
| High |
4" |
4" |
6
1/8" |
7" |
8" |
| Deep |
11" |
16" |
13
3/4" |
20" |
25" |
| Sentry
Diamond Block Sizes |
1-4 |
11-14 |
6-10 |
11-17 |
18-20 |
Sentry
Block Maximum
Tool Size Capacity (in inches) |
2
3/4"x3"x8" |
2
1/2"x7"x12" |
4
1/2"x4 3/4"x9" |
5"x7"x14" |
5"x8
1/2"x17" |
| Max.
Operating Temperature |
All
sizes to 2500° F |
| Power
Supply |
All
Sizes-220 Volts, 60 Hertz, 3 Phase |
| Rating
(KW) |
14.5 |
24 |
20 |
33 |
43 |
| Avg.
Power Used (KW) |
3-7 |
5-12 |
4-10 |
6-14 |
16-27 |

Model
HT Tempering Furnaces -Model
HT furnaces feature a recirculating air system for quick, even
tempering and are designed for exceptional temperature uniformity
and performance. Rugged industrial construction assures long life
and low maintenance
Features:
- Efficient
heat transfer created by forced air convection. Rear mounted
fan system circulates air through the heating elements to the
work chamber
- Work
shielded from heating elements to eliminate direct radiation
and prevent overheating
- Recessed
door improves chamber temperature uniformity and eliminates
cold throat conditions
- Work
stands and removable shelf elevate work in the chamber to allow
for even and uniform heating
- Rugged
industrial design. All interior metal parts including the fan
are stainless steel or nickel chromium alloy to assure long
life
Simplified
internal assembly easily removed for heating element maintenance
- Belt
driven fan system isolates air cooled motor from furnace heat
- Available
pedestal or bench mounted
- Furnace
provided with door latch to hold door in open position

Sentry
HT Furnace Operating Characteristics & Specifications
| Model
2HT |
| Size |
Max.
Temp. |
Chamber
Size |
Power
Supply |
Motor
Rating |
Overall
Size |
Bench
Height |
Approx.
Weight |
| Wide |
Deep |
High |
KW |
Volts |
Phase |
Volts |
HP |
Wide |
Deep |
High |
| 2 |
1250° F |
13" |
18" |
14" |
8 |
220 |
1 |
220 |
1/4 |
29" |
49" |
62" |
31" |
800
lbs. |
| Model
3HT |
| 3 |
1250° F |
20
1/2" |
24" |
16" |
10.5 |
220 |
1 |
220 |
3/4 |
36" |
54" |
55" |
33" |
1050
lbs. |

Model
AY and HT Dual Furnace Specifications*
| Size & Model |
2AY & 2HT |
3AY & 2HT |
4AY & 2HT |
5AY & 2HT |
6AY & 3HT |
Overall
Furnace
Size |
Wide |
29" |
32" |
30" |
38" |
44" |
| Deep |
49" |
49" |
49" |
49" |
55" |
| High |
57" |
62" |
63" |
69" |
86" |
| Approximate
Furnace Weight |
1200
lbs. |
1600
lbs. |
1500
lbs. |
2400
lbs. |
3850
lbs. |
| Height
of AY Chamber |
43" |
45" |
45" |
47" |
50" |
| Height
of HT Chamber |
All
Sizes 12" |
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