Designed and manufactured in Chicago
Portable Line Boring Machine Sets
Previously sold by a distributor, now available directly from the manufacturer.
Complete sets from $2,900
- 26 years building line boring sets
- Direct support from the people who build them
- Optional automatic Power Feed
Sets & Pricing
Line Boring Sets
Our Portable Line Boring Machine Sets are built for precision, durability, and easy on-site use. Each set includes everything needed for accurate in-line machining and repair, reducing downtime and outsourcing costs.
Set A
One boring bar
- Bar1.5" or 1.75" diameter
- Length40" or 48"
- MountingPlate or channel
Set B
Two boring bars
- Bars1.5" or 1.75" diameter
- LengthBar 1: 40" or 48" · Bar 2: 72"
- MountingPlate or channel
Custom Solution: any combination of boring bars and hardware. Call to customize a set.
Call (224) 435-6999Sets include necessary hardware needed to complete a job
- Plate or channel
- Bearings
- Mounting brackets
- Standoffs
- Centering cones
- Measuring tools
- Clamping collet
- Bolts, nuts and washers
- Tool bits
Final price depends on bar size and mounting. Prices in USD. Shipping not included.
Optional add-on for either set
Power Feed
The Power Feed Assembly provides consistent, automatic feed motion for line boring operations. It works with various motor types, including standard handheld drills. Designed and manufactured by IRM, it integrates easily into your setup for reliable, repeatable results.
Two ways to drive the bar
With a MAG drill
- Use the MAG drill you already have
- Feed the bar by hand
- Works well for lighter or occasional jobs
- How to line bore with a mag drill
With the IRM Power Feed
- Automatic, consistent feed
- Runs on a standard handheld drill
- Hands-free, for longer or heavier jobs
Direct from the manufacturer
Built in Chicago for 26 years
We’ve designed and manufactured line boring sets for the past 26 years, originally offering them through a sales distributor. Today, we sell directly to customers, providing better value and direct support from the people who build the equipment. All of our line boring sets are designed and manufactured in Chicago, using high-quality materials and precision machining to ensure reliable performance in demanding conditions.
Need something custom made?
We offer custom repairs, part production, and more! See our machining services
See the Line Boring Machine in Action. Tutorial video page
More line boring videos
Ideal for small businesses
Use it to repair
As a small family business, we understand the need for reliable, cost-efficient equipment. Rather than spending money on replacing heavy equipment or paying someone else to fix it, fix it yourself with our portable Line Boring Sets!
Gearbox parts + housing
Farming equipment
Construction equipment / bucket repair
Clevis plate bores
Valves
Driveshaft housing
Elevator sheave housings + motors
Shipbuilding applications
Common jobs include worn pin bores on excavators, backhoes, loaders, dozers and cranes, as well as bucket ears and scraper hitches.
New to line boring? See our step-by-step line boring setup guide.
Included in every set
Hardened, chrome plated bars
Made from induction hardened, chrome plated precision ground and polished steel; our bars are included in our Line Boring Sets and have square tool ports broached every 2.5” or 3” so that you can measure without pulling the shaft out. Use a Starrett 823 inside micrometer.
Only need a bar? Bars are sold individually or as part of a set, in 17 sizes from 0.875” to 1.75”, 21” to 100” long.
See all 17 line boring barsAdd-Ons
Add-Ons
Optional products available for purchase either as add-ons to any order or individually. These items are designed to enhance your setup and provide the tools you need for specific tasks.
Modified Dial Caliper
Dial caliper with extended inside jaws to measure the bore while the bar is in place
Inner Grooving and Bore Measuring Tool
Spring-loaded insert for cutting snap ring grooves; can be swapped with a gauge to measure bores. Measuring tolerance: 0.002”
Tool Positioner
Shows tool position in 0.001" increments (radius), 0.002" (diameter); for precise cutting setup. Minimum bore diameter: 2.5”
Cones
UHMW-PE plastic cones with a metal sleeve for centering the boring bar in the bore
BoreRight Tool Adjuster
Moves the tool bit with a jacking screw and shows it on a dial, for setting the cutter on the final cut. Works on any line boring bar. See BoreRight
Bore Welder
Adds weld material around the bore for rebuilding worn surfaces (different manufacturer)
Carbide Cutters
Carbide-tipped tool bits for cutting and boring operations
Components
What's in the set
Set A and Set B come with everything needed to center the bar, hold it in line and cut the bore. You supply the welder and the drive.
- Boring bar (Set A: one, Set B: two)Induction hardened, chrome plated line boring bars with square tool ports broached every 2.5" or 3".
- BearingsHold the bar in line once the legs are welded.
- Plate or channelTies the bearing assemblies together.
- Mounting brackets and standoffsMount the bearing assemblies on the surface around each bore.
- Centering conesLine the bar up with the original bores before you weld.
- Clamping colletSecures the cone with a jacking screw and supports long tool bits to prevent chatter.
- Tool bitsInstall in a square tool port on the bar.
- Measuring toolsFor checking the bore with the bar still in place.
- Bolts, nuts and washersThe hardware needed to complete a job.
- Not included: welder and driveDrive the bar with your mag drill, or add the Power Feed and run it on a standard handheld drill.
Specifications
Portable line boring machine specifications
Set A and Set B side by side. For a different combination of bars and hardware, call (224) 435-6999.
| Specification | Set A | Set B |
|---|---|---|
| Boring bars | One | Two |
| Bar diameter | 1.5" or 1.75" | 1.5" or 1.75" |
| Bar length | 40" or 48" | Bar 1: 40" or 48"; Bar 2: 72" |
| Bar material | Induction hardened, chrome plated, precision ground and polished steel | |
| Tool ports | Square, broached every 2.5" or 3", so you can measure without pulling the bar | |
| Mounting | Plate or channel; legs welded to the surface around the bore | |
| Feed | By hand with a mag drill, or automatic with the optional IRM Power Feed | |
| Drive | Your mag drill, or the Power Feed on a standard handheld drill or other motor types | |
| Price | From $2,900 (1.5") / from $3,300 (1.75") | From $4,250 (1.5") / from $4,700 (1.75") |
| Shipping | UPS, FedEx or freight; standard handling time 3 days. Shipping not included in price. | |
| Made in | Chicago, Illinois, by International Revere Machining | |
Pricing
What sets the price of a line boring machine
The price of a set depends on the configuration: one bar or two, 1.5" or 1.75" bar diameter, bar length, and plate or channel mounting. The Power Feed is the biggest add-on and starts at $3,990 with a line boring set. Tooling such as the BoreRight Tool Adjuster, modified dial caliper and carbide cutters adds to the total. Prices are in USD and shipping is not included.
For an exact price, tell us your bore size, the distance between bores and the equipment you're repairing. Request a quote or call (224) 435-6999.
FAQ
Portable line boring machine questions
Can I use a portable line boring machine with a mag drill?
Yes. The mag drill turns the boring bar and you feed the cut by hand, which works well for lighter or occasional jobs. Set A and Set B work with a mag drill, and the same set takes our Power Feed later. See how to line bore with a mag drill.
Is there a power feed?
Yes. The line boring power feed is an optional add-on for either set. It advances the bar at a steady rate and runs on various motor types, including a standard handheld drill. It starts at $3,990 with a line boring set.
What bore sizes can I cut?
It depends on the boring bar and the set. Tell us your bore size, the distance between bores and the equipment you are repairing, and we will recommend the right setup. Call (224) 435-6999 or request a quote.
Do you sell boring bars separately?
Yes. Our line boring bars are sold individually or as part of a set, in 17 sizes from 0.875" to 1.75" in diameter and 21" to 100" long.
Do I have to weld anything?
Yes. The legs on the bearing assemblies are welded to the surface around the bore. With the Power Feed, the bolt heads on its plate are welded too, on two opposite sides only. The full process is in our step-by-step line boring guide.
How is the set shipped?
We ship by UPS, FedEx and freight, and you can bill shipping to your own UPS or FedEx account. Standard handling time is 3 days after payment clears, and next-day shipment is available for wire transfer payments. Shipping is not included in the set price. International orders are handled case by case.
Can I return a line boring set?
Unused line boring sets can be returned within 30 days of purchase, in their original packaging. There is a 20% restocking fee and you pay for return shipping. See our FAQ for details.
Related equipment and guides
Build out your line boring setup
Reviews
What our customers say
“We were lucky to find International Revere Machining when we were searching for a line bore system. We knew little about line bores and were struggling finding a setup that fits our need. After a conversation with Angel we were more than confident that we had found the right guy. His system is simple, economical and works great! Angel worked with us for months to design custom fixtures for our specific application. This combined with his power feed made a final product that is fast, and efficient and has a great end result. The support that comes along with Angel's system was invaluable, if I have a questions or a problem I know that I can call, or if I need any replacement parts I can get them the same day. Not 2 months away from Hong Kong. I would highly recommend IRM products!!”
“International Revere Machining has been providing my company with exceptional service for over 8 years. Throughout this time, Anguel has proven to be a master engineer! Whether repairing old equipment, or machining replacement parts, he has the passion and skills to keep our equipment running!”
“We have been working with Angelo and International Revere Machining for 15+ years and have nothing but wonderful thing to say about them. The work they do is meticulous.”
“Been using International Revere for my machining needs for over 20 years always accurate and always on time.”
Get the exact price for your setup
Tell us your bore size and job. Anguel will get back to you with a quote.
Request a quote and get your IRM line boring set now
We’re ready to start as soon as you are. Fill out the form below, and a representative will be in touch shortly to kick off your next line boring project.
- Prefer to talk? (224) 435-6999
- Helpful to include Bore size, distance between bores, and the equipment you're repairing.
- Built in Chicago Designed and manufactured by IRM. Sets from $2,900.