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TAMCO accessories, linking multiple damper sections.

Multiple Section Horizontal Jackshaft
for use with control dampers

Hoizontal Jackshaft

RECOMMENDATION:
Do not change the factory placement of blade crank arms along the 1” (25.4 mm)
diameter shaft within the bridge bracket assembly, as these are optimally aligned
for connection to the U-bolts on the damper blades.

2 section damper with Hoizontal Jackshaft

Horizontal jackshafts are required whenever 30 square feet of damper surface area or more are to be actuated from any one motor location. They are also used if you wish to connect dampers that are three (3) sections wide.


Jackshafts can be mounted so as to drive a two (2) or three (3)section wide damper from either the left or right side. (Right side shown here.)


Jackshafts are mounted directly over the drive blade in order to minimize the length of the link bar. The shortness and thickness of the link bar prevents flexing and adds to positive control.


Optional motor crankarm can be ordered as a separate part.

STANDARD HORIZONTAL JACKSHAFT

  • For use with Series 1000, 1500, 9000, and 9000 BF control dampers.
  • Bridge brackets and side brackets are mill finish extruded aluminum.
  • 1” (25.4 mm) I.D. diameter bearings are high-strength, abrasion and impact resistant thermoplastic polyamide.
  • Bearing housings are mill finish extruded aluminum.
  • Blade clips are mill finish extruded aluminum. They are mounted directly to U-bolts and secured to drive blade.
  • Shaft is 1" (25.4 mm) diameter mill finish extruded aluminum rod.
  • Blade crank arms, locking collars, and link bars are mill finish extruded aluminum.
  • All non-aluminum parts are zinc-plated steel.
  • If jackshafts are required, all standard dampers and those with the SC or ECT Options are supplied with Standard horizontal jackshafts. If Salt Water Resistance horizontal jackshafts are desired instead, this must be specified at the time of order.

SALT WATER RESISTANCE OPTION HORIZONTAL JACKSHAFT:

  • For use with Series 1000, 1500, and 9000, 9000 BF control dampers with SW – Salt Water Resistance or MR – Moisture Resistance Options.
  • Bridge brackets and side brackets are anodized extruded aluminum.
  • 1” (25.4 mm) I.D. diameter bearings are high-strength, abrasion and impact resistant thermoplastic polyamide.
  • Bearing housings are anodized extruded aluminum.
  • Blade clips are anodized extruded aluminum. They are mounted directly to U-bolts and secured to drive blade.
  • Shaft is 1" (25.4 mm) diameter anodized extruded aluminum rod.
  • Blade crank arms, locking collars, and link bars are anodized extruded aluminum.
  • All non-aluminum parts are stainless steel.
  • If jackshafts are required, all dampers with the SW or MR Options are supplied with Salt Water Resistance horizontal jackshafts. If Standard horizontal jackshafts are desired instead, this must be specified at the time of order.

Notes:

  • A maximum of three sections can be connected with a single horizontal jackshaft, as standard. If more than three horizontal sections are to be connected using a jackshaft, contact TAMCO Customer Service.
  • The minimum duct opening height required for horizontal jackshaft installation is 13.25" (293 mm) for Flanged to Duct and Extended Rear Flange install types, and 15.75" (356 mm) for Installed In Duct type standard control dampers.
  • For shorter duct opening heights, down to 4¼" (108 mm) for Flanged to Duct and Extended Rear Flange install types, and 6¾" (172 mm) for Installed In Duct type dampers, special non-jackshaft, blade-to-blade joining is possible. Driven blades are connected using U-bolts and hex rods which span the sections. A maximum of four sections can be connected this way..

Multiple Section Horizontal Jackshaft Specifications

Multiple Section Horizontal Jackshaft Suggested Specifications

Multiple Section Horizontal Jackshaft Installation Guidelines