---
title: "Ritter R131 Triple Spindle Horizontal Borer (1″ Centers)"
description: "A three spindle horizontal borer spaced on 1 inch centers, drilling three holes per foot pedal cycle instead of one. Built for shops working to imperial dimensions on dowel joinery and stile and rail assemblies. Runs on standard 110V single phase."
url: https://360degreemachinery.com/product/ritter-r131-triple-spindle-borer/
date: 2020-11-28
modified: 2026-08-06
author: "BRYAN FREESE"
image: https://360degreemachinery.com/wp-content/uploads/2020/11/ritter-r132-triple-spindle-borer-32mm-centers.png
type: product
lang: en
product_type: simple
price: 7490
currency: USD
availability: instock
---

# Ritter R131 Triple Spindle Horizontal Borer (1″ Centers)

## Ritter R131 Triple Spindle Horizontal Borer (1″ Centers)

The R131 puts three gear driven spindles on a single head spaced one inch apart, so a foot pedal cycle that used to produce one hole now produces three. On repeat work such as dowel joinery or stile and rail assembly, that is one third the cycles for the same number of holes.

The spacing is the point. One inch centers suit shops dimensioning in inches and drilling to imperial hardware and dowel layouts. If your cabinet work is built on the European 32mm System instead, the [R132](https://360degreemachinery.com/product/ritter-r132-triple-spindle-borer/) is the same platform on 32mm centers and is the one you want.

### Three Holes per Cycle

The head is gear driven rather than belt driven at this size, and ships with three collets already configured for the direction each spindle turns, two left hand and one right hand. Bits are not included, so specify them with the order.

### Pneumatic Clamping and a Foot Pedal Cycle

A pneumatic cylinder clamps the workpiece flat to the table before the spindles advance, which keeps the part from shifting and keeps hands away from the bits. The cycle is foot actuated, so both hands stay on the work. Four material positioning stops make a setup repeatable across a run.

### Sized for a Standard Shop Circuit

Boring depth adjusts from 0 to 2 inches. The machine wires for 110V single phase, so it does not need three phase power and can be placed wherever there is a standard circuit and an air line.

### Specifications

| Spindles | (1) triple spindle gear driven head |
| --- | --- |
| Spindle centers | 1 in |
| Collets | 7/16-14 female threaded, (2) left hand, (1) right hand |
| Spindle drive motor | 3/4 HP, TEFC |
| Boring depth | 0 to 2 in, adjustable |
| Work table area | 8 in x 20 in |
| Material positioning stops | (4) |
| Clamping cylinder | 3.00 in bore |
| Motor controls | Manual |
| Cycle actuation | Foot pedal |
| Electrical | 110V, single phase, 60 Hz |
| Tooling | Not included |
| Origin | Designed and manufactured in the USA |

### Contact 360 Degree Machinery

360 Degree Machinery is an authorized Ritter distributor. Call **630-229-6705** or request a quote online. If you are deciding between 1 inch and 32mm spindle centers, tell us what hardware you build to and we will point you to the right one.