Blower Bearing Brackets

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PRODUCT AT A GLANCE

  • Designed for blowers utilizing belt drive motors
  • Custom options for blowers ranging from 7" to 25"
  • Available in three or four-arm styles
  • Available with .060 (16-gage) to .090 (13-gage) steel
  • Standalone product or available with applicable bearings and cushions
  • High volume product: typically sold in increments of 1000+
  • Packaging options available

Available in three- or four-arm styles, our bearing bracket frames are designed for belt drive motors and other applications within the HVAC industry. They facilitate accurate positioning of the shaft and blower wheel through a self-centering and self-aligning design.

Brackets are custom made to fit all blowers from 7" to 25" size. Bearings are available for shaft sizes from 1/2" to 1". We can fully assemble these blower bearing brackets with our line of bearings, with customer-provided bearings, or with externally purchased bearings.  The symmetrical design permits for the use of shaft collars on either side of the bracket.

CUSTOMIZATION

Arm lengths and strengths are customizable, such as 13-gage (.090) for heavy duty loads, and provide additional rigidity to the blower side sheet where it is mounted. There are also five different bearing socket sizes offered.

Tri- and quad-arm bearing brackets may be supplied pre-assembled by Triangle’s welding or mechanical fastening facility, or may be shipped knocked-down for customer welding. Current customers utilize their own on-site welding or choose to bolt the brackets together. Blower bearing brackets available with finish options of plain steel or galvanized.

BENEFITS

All tri-arms produce a rigid assembly which reinforces the strength of the blower side sheet on which it is mounted. The wedge shape on both edges of the cushion allows the bearing ball to absorb thrust and shock loads from either direction.

They are fully self-aligning and when matching the spherical surfaces of the cushion and ball unit they can effectively produce ball and socket self-aligning action. These brackets are self-centering when installed in the blower inlet where accurate positioning of the shaft and wheel can be facilitated.

Tri-arms are economical and have a low initial cost resulting from high volume production with full automation. Knock-down shipping is another option to save on transportation costs.

VIBRATION ISOLATION

Maximum noise and vibration suppression can be achieved with proper cushioning. Triangle's selection of vibration suppressing cushions means easier assembly of the ball unit and better ventilation. The micro-conductance prevents static accumulation and the soft Neoprene 50 Durometer is unaffected by oils, grease, oxidation, or aging.

Triangle's bearing brackets are compatible with a 1052 cushion or an 1899 cushion, depending on bearing size.

INSTALLATION

Ease of installation is aided by accurate 3-point locators where arms join each other allows for quick and easy spot or projection welding (or bolting) without use of a jig. The ball units, complete with factory assembled lubricant fittings, can be inserted easily into a mounted bracket, saving an extra operation to install the oil cup. The rounded corners and absence of burrs also minimize risk of injury to workers during handling and assembly.


REPAIR

At Triangle, we also provide a universal tri-arm for repairing and/or replacing a blower tri-arm. Engineered with multiple holes and extra-long arms, our universal bracket is an easy solution for standard repair needs. These brackets are utilized by matching up mounting holes and trimming the unnecessary remainder.

UNIVERSAL REPAIR BRACKET EXAMPLES

Brackets are custom made to fit blowers from 7" to 25" size.

  • Brackets are custom made to fit blowers from 7" to 25" size.
  • Brackets are custom made to fit blowers from 7" to 25" size.
  • Triangle can fully assemble blower bearing brackets with our line of bearings, with provided bearings, or with purchased bearings.
  • Brackets are custom made to fit blowers from 7" to 25" size.

Specifications

Triangle Tri-Arm/Quad-Arm OptionsAvailableAvailable with 
Part # FamilySocket SizeWeldedCrimped3 Arms4 Arms

Application Drawing

(Fill in Dimensions)

TA 1.876" Yes No Yes No Blower Bearing Bracket Drawing
TB 2.500 Yes Yes Yes Yes
TC 3.088 Yes No No Yes
TF 2.063 Yes* No* Yes No
TG 2.438 Yes No Yes No
TK 1.800 Yes Yes Yes No
TN 2.225 Yes* Yes* Yes Yes

 *Currently shipped unassembled, but crimping and welding are available.

Socket Size DescriptionPart # Family
Fits Triangle 'H' series and 1052 cushion with a 5/8" shaft TA
Socket size fits FAFNIR ball bearing RCSM series or equivalent TB
3.088" Socket Diameter TC
Socket size fits FAFNIR ball bearing RCSM series or equivalent for 1/2" & 5/8" shaft   TF
Socket size fits FAFNIR ball bearing RCSM series or equivalent for 3/4" shaft TG
Fits Triangle 'D' or 'P' series with 1589 cushion FAFNIR ball bearing RCR series for 5/8" & 3/4" shaft TK
Fits Triangle 'E' or 'V' series with 1899 cushion FAFNIR ball bearing RCR series for 1" shaft TN

Industry Use

  • Agriculture
  • Cabinetry
  • Display
  • Energy
  • HVAC
  • Transportation
  • Wholesale

Applications

  • Condenser Fans
  • HVAC Blowers and Fans