Overview
The Browning NAK25 IDLER is a precision idler sprocket featuring hardened teeth for extended service life in roller chain systems. This model is engineered for 4L or A chain size applications and delivers reliable tension maintenance in industrial power transmission systems. The NAK25 IDLER is supplied new in box, ready for drop-in installation.
Key Features
- Hardened steel teeth for superior wear resistance and durability
- Precision-machined bore for accurate shaft alignment
- Compact design optimized for space-constrained installations
- Compatible with standard 4L and A belt profiles
- Oil-impregnated bearing construction for reliable long-term operation
Technical Specifications
The Browning NAK25 IDLER is engineered with the following specifications:
- Shaft Length: 1 1/2 inches
- Chain Size: 4L or A
- Number of Teeth: 2.50
- Bore Diameter: 1/2 inch
- Outside Diameter: 1 9/16 inch
- Hub Diameter: 3/4 inch
- Keyway Width: 1/4 inch
- Keyway Depth: 5/32 inch
- Weight: 0.3 lbs
- Bearing Type: Oil-impregnated sintered bronze with needle rollers
Typical Applications
Idler sprockets like the NAK25 IDLER maintain proper chain tension in a wide variety of conveyor systems, packaging machinery, and general industrial power transmission equipment. The hardened tooth design makes it suitable for high-speed or heavy-load chain drive systems where extended bearing life is required. These units are commonly found in agricultural equipment, textile machinery, and manufacturing automation.
Compatibility & Replacements
Compatible With
- 4L roller chain drives
- A-series chain systems
- Standard industrial power transmission shafts
- Browning drive systems and components
- General industrial chain tensioning applications
Replaces / Drop-In Replacement For
The Browning NAK25 IDLER directly replaces OEM NAK25 units. Verify compatibility with your original equipment documentation or consult with your system integrator before ordering alternate models.
Works With
- Standard roller chain drives (ANSI 25, 35, 40, 41, 50, 60 chains)
- Oil-impregnated bearing systems
- Needle roller bearing assemblies
- Industrial chain drive tooling and maintenance kits
