Hitachi 311978 Perforated Stick-On Sanding Pad 4-3/8-Inch — main product image

Hitachi 311978 Perforated Stick-On Sanding Pad 4-3/8-Inch

Hitachi

Hitachi 311978 Perforated Stick-On Sanding Pad 4-3/8-Inch

Name: Hitachi 311978 Perforated Stick-On Sanding Pad 4-3/8-Inch
Brand: Hitachi
SKU: 311978

★★★★★4.2 (21 reviews)

A direct-fit replacement sanding pad that restores your Hitachi SV12SG orbital sander to reliable, consistent performance.

$15.72*

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Hitachi 311978 is a perforated stick-on sanding pad engineered as a direct replacement for the Hitachi SV12SG orbital sander. Sanding pads are wear components that degrade over time — the adhesive surface loses its grip, the foam backing compresses unevenly, and the pad can develop flat spots that cause inconsistent sanding. Replacing a worn pad with this OEM part restores the sander's original balance and pad flatness, which translates to smoother, more even finishes on your workpieces.

Measuring 4-3/8 inches by 4 inches, the pad features a perforated pattern that aligns with the SV12SG's dust collection ports, maintaining effective dust extraction during use. This keeps your sanding surface cleaner and extends the life of your sandpaper by preventing clogging. The stick-on design uses pressure-sensitive adhesive sanding sheets, so setup is quick and intuitive — peel the backing off your PSA sandpaper and press it onto the pad. If your SV12SG has started leaving swirl marks, vibrating excessively, or tearing through sandpaper unevenly, a fresh pad is typically the fix.

Key Features

Well-built with a simple design

Compatible with the Hitachi SV12SG Orbital Sander

Designed for sanding projects

Quick setup is intuitive and easy to use

Specifications

Brand

Hitachi

Model / Part Number

311978

Type

Perforated Stick-On Sanding Pad

Pad Dimensions

4-3/8" x 4"

Adhesive Type

Stick-On (PSA)

Compatibility

Hitachi SV12SG Orbital Sander

Pros & Cons

👍 Pros

Designed as an exact replacement for the Hitachi SV12SG, ensuring proper fit and orbital action without vibration issues
Perforated design supports effective dust extraction through the sander's built-in collection system
Simple stick-on installation allows for quick pad replacement with no tools required

👎 Cons

Only compatible with the Hitachi SV12SG orbital sander — will not fit other sander models
Requires PSA (stick-on) sanding sheets specifically; hook-and-loop sandpaper cannot be used with this pad
As a wear item, the pad will need periodic replacement depending on frequency of use and sanding pressure

Frequently Asked Questions

What sander is the Hitachi 311978 sanding pad compatible with?

This pad is designed specifically for the Hitachi SV12SG orbital sander. It is not intended as a universal replacement and should only be used with the SV12SG model.

Is this a hook-and-loop or stick-on (PSA) sanding pad?

This is a stick-on (pressure-sensitive adhesive) sanding pad. It is designed for use with PSA-backed sanding sheets, not hook-and-loop discs.

What are the dimensions of this sanding pad?

The pad measures 4-3/8 inches by 4 inches in a perforated design that allows for dust extraction during sanding.

Does the perforated design help with dust collection?

Yes, the perforations in the pad align with the sander's dust collection system, allowing sawdust and debris to be extracted through the pad for a cleaner work surface and improved sanding performance.