Masterdrive AK51H 1-Groove Sheave Pulley for 3L, 4L, A V-Belts – 4.95″ OD

Masterdrive AK51H 1-Groove Sheave Pulley for 3L, 4L, A V-Belts – 4.95″ OD

Condition: Used. Good used condition.

The Masterdrive AK51H 1-Groove Sheave Pulley is a high-quality, precision-machined pulley designed for use with 3L, 4L, and A-section V-belts. Built for durability and reliable performance, this sheave is ideal for use in a wide range of mechanical systems, including HVAC, agricultural equipment, and industrial machinery. The AK51H sheave is designed for use with an H-style bushing, which provides a secure and adjustable mounting solution.

Features
Model: AK51H
Manufacturer: Masterdrive
Type: 1-Groove Sheave Pulley
Compatible Belts:
3L (Light Duty V-Belt)
4L (A/Classic V-Belt)
A-Section (Classical V-Belt)
Outer Diameter (OD): 4.95 inches
Bore Type: Bushed
Material: Precision-machined cast iron with corrosion-resistant finish
Groove Design: Precision V-groove for secure belt grip
Application: Mechanical power transmission in a variety of systems
Weight: Approximately 2.5 lbs (may vary slightly)

Applications
HVAC Systems: Belt-driven fan assemblies and blower motors
Agricultural Equipment: Used in belt-driven pulleys for tractors and tillers
Industrial Machinery: Driveshafts, conveyor systems, and rotary equipment
Automotive Systems: Small engine and pulley applications
Pumps and Compressors: Efficient power transfer for belt-driven units

Cross-Referenced Models
Browning AK51H (Similar Sheave Design)
TB Woods AK51H (Interchangeable Sheave)
Dayton 1AK51H (Comparable Model)
Dodge AK51H (Equivalent Design)

Comparable Products
Browning AK50H (4.75″ OD, 1-Groove Sheave)
TB Woods 1AK54H (5.4″ OD, 1-Groove Sheave)
Dayton 1AK50H (4.75″ OD, Single Groove)
Gates 1AK48H (4.5″ OD, Single Groove)

Assembly & System Use
Installation Instructions:
Choose the Correct Bushing: The AK51H uses an H Bushing (not included).
Insert Bushing into the Sheave: Ensure a secure fit without forcing it.
Align the Sheave on the Shaft: Position it at the desired location.
Tighten the Bushing Bolts: Use a torque wrench to ensure proper tension.
Install the V-Belt: Ensure the belt is properly seated in the groove.
Adjust Belt Tension: Follow the recommended tension for your system.
Compatible Bushings:
H Bushing Series: H1, H2, H1-1/8, H1-3/16 (Verify specific bore size for your shaft)
Belt Compatibility:
3L (Light Duty V-Belt): For smaller pulleys and low-power applications
4L (A/Classic V-Belt): Standard use for industrial and HVAC systems
A-Section (Classical V-Belt): Heavy-duty applications requiring more power

Related
Masterdrive 1-groove sheave pulley
AK51H sheave with H bushing
V-belt pulley 4.95 inch OD
single groove sheave for HVAC
cast iron belt pulley for industrial use
3L 4L A V-belt sheave pulley

Common Requests:
What is the bore size of this sheave?
The AK51H is designed for use with an H Bushing, which allows for a variety of bore sizes (H1, H1-1/8, H1-3/16, etc.).
Can this sheave be used with a B-section V-belt?
No, this model is specifically designed for 3L, 4L, and A-section V-belts.
Is the H Bushing included?
No, the H Bushing must be purchased separately.
Can this be used for high-speed applications?
Yes, as long as the RPM does not exceed the sheave’s rated capacity (typically 3,600 RPM for cast iron sheaves).
What is the recommended torque for the bushing bolts?
The recommended torque depends on the specific H Bushing model used. Refer to the manufacturer’s specifications.

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