Power Tool Defects & Kickback Injuries: Manufacturer Liability Claims in 2025

When the Tool Is the Problem

Power tool injuries are among the most common causes of serious hand, arm, and eye injuries in both occupational and consumer settings. The Consumer Product Safety Commission records tens of thousands of emergency room visits annually from power tool injuries. While some injuries result from user error, many are the direct result of defective product design — inadequate guarding, kickback susceptibility that violates industry standards, and guards that can be easily defeated without warning.

When a defect in design, manufacturing, or warning causes a power tool injury, the manufacturer, distributor, and retailer may all be liable under strict product liability theory.

Common Power Tool Defects That Cause Serious Injuries

Circular Saw Kickback

Kickback is the most dangerous hazard of circular saw use. It occurs when the saw blade binds in the cut material and the saw is suddenly and violently thrown back toward the operator. In severe cases, kickback causes the blade to travel across the operator's body, causing lacerations, amputations, and facial injuries.

Manufacturers have known about kickback for decades. Modern anti-kickback technologies include:

• **Riving knives** (or splitters) that keep the cut kerf open and prevent the wood from closing on the blade
• **Anti-kickback pawls** that dig into the workpiece to prevent backward motion
• **Electronic kickback braking systems** that detect sudden blade resistance and halt the blade within milliseconds

When a saw lacks these features despite being technically and economically feasible, or when the features are present but poorly designed, a design defect claim is well-founded.

Guard Removal and Defeatable Guards

Most power tools ship with guards that manufacturers know users will remove. Angle grinders, circular saws, table saws, and bench grinders all have guards that are routinely removed for specific applications — and manufacturers know this from their own market research, warranty claims, and accident histories.

A manufacturer who designs a guard that must be removed to perform foreseeable tasks creates a defective product. The legal theory: if removing the guard is a foreseeable use (or misuse), the manufacturer has a duty to design a product that is reasonably safe even with the guard removed — or, at a minimum, to warn that specific applications require guard removal and specify the risks.

Courts have held manufacturers liable when:

• Guards were designed in ways that made them cumbersome and incentivized removal
• Instructions described operations that were impossible to perform safely with the guard installed
• Guards were easily bypassed without tools and no interlock prevented tool operation without the guard

Angle Grinder "Wheel Burst" Cases

Angle grinders operate at extremely high RPM. A grinding or cutting disc that is defective, over-stressed, or operated above its rated speed can shatter explosively, sending fragments at ballistic velocities. Face, neck, and eye injuries from wheel burst are devastating and often permanent.

Product liability theories in wheel burst cases include:

• Manufacturing defect in the wheel (improperly bonded abrasive material)
• Design defect in the angle grinder (inadequate RPM limiting, allowing overspeed)
• Failure to warn of incompatible wheel/grinder combinations
• Inadequate packaging or date-code marking leading to use of expired abrasive wheels

Table Saw SawStop Technology and Design Defect Claims

SawStop patented flesh-detection technology in the early 2000s that can stop a table saw blade within 5 milliseconds of contact with skin — fast enough to prevent serious lacerations. The technology is proven and commercially available.

Plaintiffs have argued — with mixed success — that major table saw manufacturers who declined to license or develop equivalent technology are liable for design defect when users are seriously injured by saws that could have incorporated flesh-detection technology. Several high-value jury verdicts have been rendered on this theory, though appellate courts have divided on whether the failure to adopt a competitor's technology constitutes a defect.

Employer and Workers' Compensation Considerations

In occupational settings, power tool injury claims involve both workers' compensation and third-party product liability. The workers' compensation claim covers immediate medical bills and lost wages. The product liability claim against the manufacturer is independent and not capped by workers' comp limits.

If an employer modified a tool — removing guards, defeating interlocks — the employer may also be liable to the injured worker beyond workers' comp through an "intentional tort" or deliberate removal of safety device claim, where recognized by state law.

Damages in Power Tool Cases

Serious power tool injuries commonly involve:

• Finger and hand amputations or degloving injuries
• Eye injuries, including partial or complete vision loss
• Facial lacerations and scarring requiring reconstructive surgery
• Nerve and tendon damage affecting hand function

Compensable damages include all medical expenses, future medical care and prosthetics, lost wages, loss of earning capacity (particularly for skilled tradespeople whose work requires hand function), pain and suffering, and disfigurement.

Building a Strong Case

Key steps:

1. **Preserve the tool.** Do not return, repair, or discard the tool until an expert has inspected it.
2. **Preserve the workpiece.** The material being cut at the time of injury can establish the conditions of the accident.
3. **Document the guard configuration.** Was the guard present? Was it the original guard? Photograph everything.
4. **Request all product materials.** Operator's manual, safety data sheet, warning labels, and the specific model's product recall history.
5. **Contact a product liability attorney immediately.** These cases require expert mechanical engineers who specialize in the relevant tool category.