Black AX cogged drive belt AX136 on white background
Black AX cogged drive belt AX136 on white background

HVAC & Equipment V-Belt B33/5L360, Replaces Gates 9003-2033, Timken BP33

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BELT SLIPPING OR WORN?

HVAC & Equipment V-Belt B33/5L360, Fixes Belt Slipping

Wrapped B-section drive belt for HVAC, fan, blower, pump, conveyor and industrial power-transmission applications.

Part B33 36" Outside Length 21/32" / approximately 16.7 mm Top Width

The B33 V-belt transfers motor power to a compatible driven sheave. Match the original belt by section, width, length and duty rating before ordering.

Cross-Reference Information

Exact Classical DesignationsB33, Gates B33, Gates 9003-2033, Timken B33, Timken BP33
Verified Dimensional Alternatives5L360, Gates 5L360
Cogged Performance AlternativeBX33 cogged alternative; verify minimum sheave diameter and duty rating
Outside Length36" / 914 mm

Important: Exact classical cross-references share the same industry section and nominal length. FHP and cogged alternatives may use different construction, minimum pulley diameter, effective length or service rating. Verify the equipment requirements before substituting.

Is This the Right Belt?

Primary Part NumberB33
Cross SectionB section
Top Width21/32" / approximately 16.7 mm
Nominal Thickness7/16" / approximately 11.1 mm

Confirm the complete marking on the original belt. Similar belts can share an outside length while using a different cross section, depth, effective length or construction.

Common Symptoms

  • Belt slips under load
  • Squealing, chirping or belt dust
  • Fan, blower, pump or driven component turns slowly
  • Belt is cracked, glazed, stretched or frayed

Check Before Replacing

  • Confirm the B-section profile and 21/32" / approximately 16.7 mm top width
  • Confirm the required 36-inch outside length
  • Inspect pulleys and sheaves for wear, rust, glazing or debris
  • Check alignment, bearing condition and belt tension
Pro Tip: A replacement belt can fail early when sheaves are worn, bearings drag, shafts are misaligned or tension is excessive. Correct the root cause before installation.

Part Details

Part TypeWrapped classical B-section V-belt
Primary FunctionTransfers motor power to a compatible driven sheave
Nominal Angle40°
ConditionNew replacement drive belt

Installation Notes

  1. Disconnect and lock out electrical power.
  2. Relieve belt tension according to the equipment service manual.
  3. Inspect and clean the pulleys before fitting the replacement belt.
  4. Align the pulleys and set tension to the equipment manufacturer's specification.
  5. Rotate the drive by hand, reinstall guards, restore power and test operation.

Verified Compatible Equipment Models

No manufacturer-published model-level fitment was verified for this universal belt size. Official sources publish broad applications including fans, blowers, pumps, mixers, conveyors, appliances, outdoor power equipment and general industrial machinery.

Fitment reminder: Match the original belt designation, section and length. Do not order by equipment category alone.

✅Compatibility & Cross Reference

Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.

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