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Black closed-loop timing belt, 275 teeth, 40 mm wide, 850 mm pitch length

Dayton

Dayton 3850-14M-40 Curvilinear Timing Belt 40 mm 850 mm 275 teeth

SKU CH-83EG-R9MM8

A 40 mm wide curvilinear timing belt with 275 teeth and an 850 mm pitch length for general industrial power transmission

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorBlack
  • HTD curvilinear tooth profile ensures smooth power transmission
  • 275 teeth over 850 mm pitch length deliver precise synchronisation
  • 40 mm top width handles high torque in general industry
  • Neoprene body with fiberglass cord resists stretch from -22 to 194 °F
  • Nylon tooth coating reduces wear and noise during operation

Industrial Timing Belt for Power Transmission

The Dayton 3850-14M-40 is a curvilinear timing belt designed for general industrial power transmission. It uses a neoprene body with a nylon tooth coating and fiberglass reinforcing cords. The closed-loop construction provides 275 teeth on a 14 mm pitch for synchronous drive applications.

Integration Requirements for Synchronous Drives

This belt requires compatible HTD pulleys with a matching 14 mm pitch and a 40 mm top width to function correctly. The one-sided tooth profile engages the pulley grooves while the smooth back runs against idlers or tensioners. It operates across a temperature range from -22 to 194 degrees F without lubrication.

Replacement Guide for HTD Belt Series

The 3850 mm pitch length and 275 tooth count identify this belt as a direct replacement for worn HTD series belts with identical dimensions. The jump is warranted when the existing belt shows tooth shear, cracking, or cord fatigue. It is not suited for drives requiring a different pitch, width, or double-sided tooth engagement.

Highlights

  • HTD curvilinear tooth profile ensures smooth power transmission
  • 275 teeth over 850 mm pitch length deliver precise synchronisation
  • 40 mm top width handles high torque in general industry
  • Neoprene body with fiberglass cord resists stretch from -22 to 194 °F
  • Nylon tooth coating reduces wear and noise during operation

Specifications

BrandDAYTON
TypeBearings, V-belts & Power Transmission Equipment
ColorBlack

Questions about this item

At what temperature does the 3850-14M-40 belt reach its maximum operating limit?

The belt is rated for a maximum operating temperature of 194 Degrees F, beyond which the neoprene material and fiberglass cords may degrade.

How much heat does the belt generate when running continuously at 14 mm pitch?

The belt itself does not generate significant heat; its operating range spans -22 Degrees F to 194 Degrees F, so sustained use stays within this window if the drive is properly aligned.

Which pulley profile must the existing drive use to match the 275-tooth HTD belt?

The drive must use HTD curvilinear pulleys with a 14 mm pitch and a 40 mm belt width to engage all 275 teeth correctly.

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