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Ingersoll Rand 308B — Review & Specs | Pricepect | Pricepect

Home Die GrindersIngersoll Rand 308B

Ingersoll Rand 308B — image 1

Ingersoll Rand

Ingersoll Rand 308B

Expert Review Analysis

The Ingersoll Rand 308B is a lightweight, straight air die grinder designed for precision tasks in tight spaces, featuring a 0.33 HP motor that delivers 25,000 RPM. It combines ergonomic composite housing with rear exhaust and safety-lock throttle controls to enhance operator comfort and safety during industrial-duty applications.

✓ Best for: Professional welders, fabricators, machinists, and mechanics needing precision in confined areas. Specific use cases include porting cylinder heads, breaking welds, de-burring metal parts, polishing surfaces, and light grinding on automotive or aerospace components.✗ Not ideal for: Users requiring a right-angle configuration for specific access needs, as the sister model 302B provides that option. It is also less suitable for environments where high noise levels (103 dBA) cannot be mitigated or where air compressor capacity is insufficient for 28 CFM load consumption.

Pros

✓High power-to-weight ratio allows for extended use without causing operator fatigue
✓Straight design provides excellent access to confined areas where right-angle tools cannot reach

Best Seller Rank History

Now#1Best#1Worst#18

Lower = better sales rank

Rating Trend

Rating4.6/ 5Reviews592+-2,533 reviews

Specifications

Design

Length6.85 inches mm

Width3.94 inches mm

Height7.94 inches mm

Weight1.02 lbs g

Handle TypeStraight, ergonomic D-shaped

Features

Exhaust LocationRear

Throttle StyleSafety-lock lever

Collet Capacity1/4 inch and 6 mm

General

BrandIngersoll Rand

Model308B

Product TypeStraight die grinder

ColorGray

Warranty1-year

Performance

Rated Power0.33 HP W

Max Free Speed25,000 RPM RPM

Air Consumption @ Load28 CFM L/min

Average Air Consumption7 CFM L/min

Sound Level103 dBA dBA

Power

Air Pressure90 PSI bar

Air Inlet1/4 NPTF

Minimum Hose Size3/8 inches mm

Construction

Bearing TypeBall-bearing construction

Lubrication

Lubrication SystemBuilt-in lubricating wick

Safety

Throttle MechanismSafety-lock lever

Dimensions & Weight

Height3.94 Inches

Width7.94 Inches

Depth10.24 Inches

Weight1.02 pounds

Research Sources

intlairtool.com

richardssupply.com

gradeatools.com

burtprocess.com

powertools.ingersollrand.com

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User Reviews

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4.6

(589 reviews)

$90.99$120.9925% off

308BGrayComposite Housing 1-year

✓

Low vibration and ergonomic composite grip significantly enhance comfort and control

✓Rear exhaust directs air away from the operator to improve workspace visibility and safety

✓Safety-lock lever throttle prevents accidental starts during handling or setup

✓Durable ball-bearing construction reduces vibration and extends the tool's operational life

Cons

✗High sound level of 103 dBA requires mandatory hearing protection for safe operation
✗Air consumption of 28 CFM at load demands a capable and robust air compressor system
✗Lack of right-angle configuration limits utility compared to the sister model 302B
✗Requires a minimum hose size of 3/8 inches which may not fit all standard setups

From Expert Reviews

Praised by Experts

✓Powerful 0.33 HP motor delivers superior performance in a compact 6.85-inch body
✓Superior ergonomics and long-lasting construction make it ideal for industrial-duty tasks
✓Straight design excels at reaching tough spots and confined areas effectively
✓Durable metal and composite housing ensures reliability in demanding environments

From User Reviews

Users Love

✓Lightweight feel of 1.02 lbs makes the tool highly maneuverable for everyday shop use
✓Consistent power output is maintained effectively during de-burring and polishing tasks
✓Included collets and wrenches allow for quick and easy setup without additional purchases
✓Composite grip provides noticeable comfort during prolonged periods of continuous use

Users Complain About

✗High noise levels between 92 and 103 dBA are a standard drawback requiring hearing protection
✗Requires a strong air supply to maintain the full 25,000 RPM speed under heavy load

Expert Opinion

Professional sources praise the 308B for its powerful 0.33 HP motor and 25,000 RPM speed housed in a compact 6.85-inch body, calling it ideal for industrial-duty tasks with superior ergonomics and long-lasting construction. Ingersoll Rand's official site highlights its ability to reach tough spots compared to the right-angle 302B, positioning it as the best bet for precision grinding. Retail experts note the durable metal and composite housing and ball-bearing design for reliability in demanding environments.

What Users Say

Search results lack extensive user reviews, but available notes emphasize praise for its lightweight feel, maneuverability, and consistent power in everyday shop use like de-burring and polishing. Users appreciate the included collets and wrenches for quick setup. Recurring mentions include comfort from the composite grip, though some note the need for a strong air supply to maintain 25,000 RPM under load. No major complaints surface, but high noise is implied as a standard pneumatic tool drawback.

Common Complaints

High noise levels require hearing protection. Requires a strong air supply to maintain speed under load

How It Compares

vs. Ingersoll Rand 302B

Advantages

✓Straight design provides better access to tight spots compared to the 302B's right-angle configuration

Disadvantages

✗Lacks the right-angle configuration that the 302B offers for different access needs

Choose the 308B for straight-line access in tight spaces, and the 302B when a right-angle approach is required.

vs. Chicago Pneumatic CP890

Advantages

✓Superior ergonomics and includes collets and wrenches for quick setup

Disadvantages

✗Matches competitors on noise levels and air consumption requirements

Choose the 308B for better included accessories and ergonomics, while competitors offer similar power and noise profiles.

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