Description
Product image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.
Hoyme inline damper body without actuator — same galvanized construction, blade, nylon bearings, and mounting collar as the full HAC product family. An extended shaft protrudes from the body for actuator mounting. You select and supply the actuator. Two shaft extension lengths available: 2.50" and 3.75". Sizes 4"–30".
⚠ Shaft Extension Must Be Specified at Order
There is no default shaft extension. Orders submitted without a specified shaft extension cannot be processed. Measure the distance from the damper body to the actuator drive interface before ordering — account for the actuator housing depth and any mounting bracket. If the wrong length is ordered, the actuator drive interface will not reach the shaft correctly and the assembly will need to be replaced.
✓
Complete damper body — actuator not included — blade, nylon bearing assembly, and mounting collar all included; the only missing component is the actuator itself
✓
For engineer-specified actuators outside the standard lineup — Siemens, Honeywell, pneumatic, specific Belimo models not in the HAC series, or any BAS controls specification requiring a non-standard actuator
✓
Retrofit reuse of existing actuators — if the actuator is functioning and only the damper body needs replacement, order the no-motor body in the same size with the shaft extension that matches the original mounting
✓
Same nylon bearing assembly as motorized HAC products — engineered for the freeze-thaw cycling and sustained mechanical loads of northern climate installations
✓
4"–30" — largest range in the HAC family — shaft extension availability varies by size; 4" is 2.50" only, 22"–30" is 3.75" only, 6"–20" available in either
2.50" Shaft (code: 250)
✓Actuator mounts close to the damper body
✓Standard brackets and direct-mount actuators
✓Available on 4", 6", 8", 10", 12", 14", 16", 18", 20"
✓Only option for 4" — not available on 22"–30"
3.75" Shaft (code: 375)
→Actuator requires more clearance from the damper body
→Deeper housings, linkage arms, offset brackets
→Available on 6", 8", 10", 12", 14", 16", 18", 20", 22", 24", 26", 28", 30"
→Only option for 22"–30" — not available on 4"
| Size | 2.50" Shaft — Part Number | 3.75" Shaft — Part Number |
|---|---|---|
| 4" | HAC-0400-250 | Not available |
| 6" | HAC-0600-250 | HAC-0600-375 |
| 8" | HAC-0800-250 | HAC-0800-375 |
| 10" | HAC-1000-250 | HAC-1000-375 |
| 12" | HAC-1200-250 | HAC-1200-375 |
| 14" | HAC-1400-250 | HAC-1400-375 |
| 16" | HAC-1600-250 | HAC-1600-375 |
| 18" | HAC-1800-250 | HAC-1800-375 |
| 20" | HAC-2000-250 | HAC-2000-375 |
| 22" | Not available | HAC-2200-375 |
| 24" | Not available | HAC-2400-375 |
| 26" | Not available | HAC-2600-375 |
| 28" | Not available | HAC-2800-375 |
| 30" | Not available | HAC-3000-375 |
Odd-inch sizes above 4" are not available in this series — available sizes are 4", 6", 8", 10", 12", 14", 16", 18", 20", 22", 24", 26", 28", 30". Measure shaft extension requirement before ordering — do not estimate. For non-standard shaft extensions or sizes contact Hoyme directly.
Actuator
Not included — field selected
Sizes
4"–30"
Shaft Extensions
2.50" or 3.75"
Construction
Galvanized inline — nylon bearings
Order Requirement
Shaft extension must be specified — no default
Warranty
10-year mechanical (body)
Need a factory-complete assembly instead? If the actuator is in the standard Hoyme lineup, a factory-complete product is faster to specify and ships as a single unit: HAC-40 (Belimo TFB24) for 24 Vac/dc on/off, HAC-50/51 (Hoyme quarter-turn) for 6"–14", HAC-43 (TFB24-SR-T) for modulating. Check the full HAC Belimo series before ordering the no-motor body.
10-year mechanical warranty — damper body
Made in Canada · Same construction as full HAC product family