Choosing a bench vise comes down to jaw width, clamping force, body material and how it mounts. Here is what matters, in plain language.
1Jaw Width and Opening
Jaw width determines the maximum workpiece you can grip securely. A 2″-5″ light-duty vise is right for hobby and small work; 6″-8″ medium-duty covers most workshops; 8″-10″ heavy-duty is for industrial fabrication. Match opening to your biggest material.
2Clamping Force
Clamping force ranges from 1200-1500 lbs (light) to 6000-8000 lbs (heavy). Higher force holds work under aggressive machining but can crush delicate pieces — pick the force your work actually needs.
3Cast Iron vs. Forged Steel
Gray cast iron (HT200/HT250) is the economical standard and dampens vibration well. Forged or cast carbon steel (45#) resists impact and shock loads — the choice for heavy, hard-use applications. Jaw faces are hardened separately to 58-62 HRC.
4Swivel Base and Mounting
A 360° swivel base repositions work without unbolting; a fixed base is more rigid for heavy hammering. Match bolt size and spacing to your bench and reinforce the top for heavy-duty vises.
FAQ
Quick Answers
What size bench vise do I need?+
Most workshops choose a 6″ medium-duty vise — enough force and jaw coverage for general metalwork, woodwork and auto repair, at a reasonable price.
Is a swivel base worth it?+
If you frequently change work angles, yes — it saves repeated unbolting. For heavy hammering and extreme force, a fixed base is more rigid.
Next Steps
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