Yost Vises 750-DI - User Manual

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Thank you for choosing a vise from Yost Vises, LLC. For future reference please record

the following:

Model #: 750-DI

Purchase Date: _____________

Supplier: _____________

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Claims for damage, shortage or errors in shipping must be reported within one (1) day

following delivery to Buyer. Buyer shall have seven (7) days from the date Buyer

receives any products to inspect such products and services for defects and

nonconformance which are not due to damage, shortage or errors in shipping and notify

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such seven (7) day period, Buyer shall be deemed to have irrevocably accepted the

products, if not previously accepted. After such acceptance, Buyer shall have no right to

reject the products for any reason or to revoke acceptance. Buyer hereby agrees that such

seven (7) day period is a reasonable amount of time for such inspection and revocation.

Buyer shall have no right to order any change or modification to any product or services

previously ordered by Buyer or its representatives or cancel any order without Seller's

written consent and payment to Seller of all charges, expenses, commissions and

reasonable profits owed to or incurred by Seller. Specially fabricated or ordered items

may not be canceled or returned, and no refund will be made. The sole and exclusive

remedy for merchandise alleged to be defective in workmanship or material would be the

replacement of the merchandise subject to the manufacturer's inspection and warranty.

Product Specifications:

1. Technical Statistics:

Model Item Jaw Jaw Pipe Throat Gross

Number Number Width Opening Capacity Depth Weight

750-DI 11750 5” 5” ¼” – 3-1/2" 3-3/4" 63 lb.

2. Jaws able to withstand a load of no less than 1600 inch pounds without distortion

of the vise or any components.

3. Vise body (front bar, back jaw, swivel base) Ductile Iron.

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Summary

Product Specifications

Technical Statistics

Key specifications including jaw width, opening, pipe capacity, throat depth, and gross weight.

Mount Vise To A Secure Workbench

This document describes the Yost Model 750-DI vise, a robust tool designed for securely holding workpieces during various tasks. The manual provides comprehensive instructions for its safe setup, operation, and maintenance, emphasizing user safety and proper handling to prevent injury and equipment damage.

Function Description

The Yost Model 750-DI vise serves as a stationary clamping device, primarily used to hold objects firmly in place, allowing users to perform work such as cutting, filing, drilling, or assembly with both hands free. Its design incorporates a main body, a stationary jaw, and a movable jaw, which are operated by a lead screw with a handle. The vise features serrated jaws for a strong grip on various materials and includes pipe jaw inserts for securing cylindrical objects. A swivel base allows the vise head to rotate, providing flexibility in positioning the workpiece for optimal access and ergonomic working angles. The construction utilizes ductile iron for the main body components, ensuring durability and the ability to withstand significant loads without distortion.

Usage Features

The Yost Model 750-DI vise is designed for versatile use in workshops and similar environments. Key usage features include:

Secure Mounting: The vise must be securely mounted to a workbench using appropriate nuts, bolts, and lock washers. The manual recommends reinforcing the workbench with an additional piece of wood or metal plate underneath for added strength, especially when dealing with heavy loads or high torque. Proper mounting ensures stability and prevents the vise from tipping or moving during operation.
Jaw Operation: The vise's jaws are opened and closed by turning a lead screw handle. Turning the handle counterclockwise opens the jaws, while turning it clockwise closes them, clamping the workpiece firmly. Users are cautioned not to open the jaws beyond their rated capacity to prevent damage.
Swivel Base Functionality: A significant feature is the swivel base, which allows the vise head to rotate 360 degrees. This enables users to position the workpiece at various angles relative to the workbench, optimizing access for different tasks and improving ergonomics. The swivel base is secured by lockdowns, which must be loosened to rotate the vise and then re-tightened to secure it in the desired position. Users are advised to loosen the lockdowns only slightly to prevent the vise from tipping.
Workpiece Compatibility: The vise is equipped with serrated jaws for general clamping and includes pipe jaw inserts specifically designed to hold cylindrical objects securely. This dual functionality enhances its versatility for different types of workpieces.
Safety Guidelines: The manual provides extensive safety instructions, emphasizing the importance of wearing personal protective equipment (PPE) such as eye, face, and ear protection, dust masks, and restrictive clothing. It also warns against common misuses, such as using hammers or extension pipes on the handle, unscrewing the movable jaw beyond its limit, or welding the base to other objects. These guidelines are crucial for preventing injuries and ensuring the longevity of the tool.
Appropriate Sizing: Users are encouraged to select a vise of appropriate size and capacity for the work object to ensure effective and safe clamping.

Maintenance Features

Proper maintenance is essential for the longevity and safe operation of the Yost Model 750-DI vise. The manual highlights several key maintenance practices:

Regular Greasing: The main screw of the vise requires regular greasing. This lubrication ensures smooth operation of the jaws, reduces friction, and prevents wear and corrosion, thereby extending the life of the screw mechanism.
Periodic Inspection: Users are instructed to regularly inspect the vise for any signs of stress fatigue or damage before each use. This includes checking for cracks, bends, or loose components. Early detection of damage can prevent catastrophic failure during operation and potential injury.
Re-tightening Mounts: The nuts securing the vise to the workbench should be periodically rechecked and re-tightened. Over time, vibrations and forces from use can cause these fasteners to loosen, compromising the stability of the vise. Ensuring they remain tight is critical for safe operation.
Cleanliness: While not explicitly detailed as a maintenance feature, the general instruction for a clean and unobstructed work area implies that keeping the vise free from debris and obstructions is part of good practice, preventing interference with its moving parts.
Proper Storage: Although not directly stated, implicit in the safety warnings and operational guidelines is the need to store the vise in a manner that prevents damage or exposure to conditions that could compromise its integrity, such as extreme heat or moisture.

By adhering to these usage and maintenance guidelines, users can ensure the Yost Model 750-DI vise remains a reliable and safe tool for their workshop needs.