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Stock Number: 127
Description: 1973 CAT 561C with Sideboom 1973 CAT 561C with Sideboom. s/n: 1934406 Quantity: 1
Updated: Friday, October 09, 2026 10:51 am
Location: Vernal, Utah, USA
Seller: Mideast Equipment Supply
Hours: 238
ROPS: Open
Serial Number: 62A00071
Description:
Updated: Friday, August 14, 2026 09:20 am
Location: North Battleford, Saskatchewan, Canada
Seller: Spence Heavy Equipment Sales & Rentals
ROPS: None
Serial Number: 62A383
Description: Midwestern 561C All Hydraulic Pipelayer Sideboom, 20" double bar pads, hydraulic winches, 6 cyl Cat Diesel, Runs Great,
Updated: Friday, October 09, 2026 02:16 pm
Location: Woodland, California, USA
Hours: 7 000
ROPS: Open
Description: Runs, can go to work. I have several others for sale if you need pipelayers give me a call.
Updated: Tuesday, October 06, 2026 01:19 pm
Location: Wichita Falls, Texas, USA
Seller: Garcia Grading & Holding LLC
Hours: 13 481
ROPS: Open
Serial Number: 92J433
Stock Number: 73CAT561PIPE
Description: nice machine, dual winches, runs and operates excellent. good U/C, *MACHINE HAS SET FOR A LONG TIME AND WILL NEED A FULL SERVICE AND GOING OVERGOIN...
Updated: Saturday, October 10, 2026 07:40 am
Location: Covington, Tennessee, USA
Seller: Don Baskin Truck Sales LLC
ROPS: Open
Description: Please Contact For Further Details
Updated: Monday, October 05, 2026 08:38 am
Location: Columbia, Maryland, USA
Seller: Energy Kinetics, LLC
Hours: 1 200
ROPS: None
Serial Number: 92J197
Stock Number: 172-24165
Description: Midwestern Hydraulic Conversion, Cat 3306 Diesel,newer rails
Located in Woodland California
Updated: Friday, October 09, 2026 02:16 pm
Location: Woodland, California, USA
ROPS: None
Serial Number: 54X763
Stock Number: 8841
Description: Hyd. Counterweight, 18' Boom,
Powershift Trans,
CAT 3306 DI
35k lbs obo
40k lift
Updated: Wednesday, September 09, 2026 11:26 am
Location: Madera, California, USA
Seller: National Equipment, LLC
ROPS: None
Serial Number: 54X765
Stock Number: 8840
Description: Hyd Counterwight, 18' Boom,
CAT 3306 DI
Powershift Transmission,
35k lbs obo
40k lift
Updated: Wednesday, September 09, 2026 11:26 am
Location: Madera, California, USA
Seller: National Equipment, LLC
Hours: 3 433
ROPS: Open
Serial Number: 54X00694
Description: Superior CPX Hydraulic Conversion, Boom of Choice
Updated: Wednesday, September 16, 2026 03:50 pm
Location: Denver, Colorado, USA
Seller: Worldwide Machinery
Hours: 6 239
ROPS: Open
Serial Number: 54X00674
Description: Superior CPX Hydraulic Conversion, Boom of Choice-Two (2) pipelayers available for sale in excellent condition, very detailed records and histories.
Updated: Wednesday, August 12, 2026 01:36 pm
Location: Lubbock, Texas, USA
Seller: Worldwide Machinery
Hours: 2 821
ROPS: Open
Drawworks: Hydraulic
Description: Powershift, UC 90%, runs good
Updated: Wednesday, September 09, 2026 11:53 am
Location: Prestonsburg, Kentucky, USA
Seller: Equipment Tool Supply
Hours: 2 686
ROPS: Open
Serial Number: 54X00549
Description: 18FT MIDWESTERN SIDE BOOM. 3 LEVER CONTROL. 20IN SINGLE GROUSER TRACK PADS.
Updated: Tuesday, September 08, 2026 09:52 am
Location: Pittston Township, Pennsylvania, USA
Seller: LC Enterprise, LLC
ROPS: Open
Serial Number: 54X00544
Stock Number: 319
Description:
Updated: Wednesday, September 09, 2026 11:26 am
Location: Madera, California, USA
Seller: National Equipment, LLC
ROPS: Open
Serial Number: 54X00570
Stock Number: 17077
Engine Manufacturer: CATERPILLAR
Engine Model: 3306DI
Description: BULLDOZER PARA PARTES, CON MOTOR CATERPILLAR 3306DI A DIESEL, ADITAMENTO MARCA SUPERIOR, MODELO CPX-71, AÑO 2012
Updated: Wednesday, October 07, 2026 08:26 pm
Location: Cuauhtémoc, Chihuahua, Mexico
Seller: Maquinaria Wiebe Km 24
ROPS: None
Serial Number: 54X00571
Stock Number: 8844
Description: Hyd Counterweight
3306 DI
35k lbs obo
40k lift
Updated: Wednesday, September 09, 2026 11:26 am
Location: Madera, California, USA
Seller: National Equipment, LLC
Hours: 150
ROPS: Open
Serial Number: 54X00463
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00463
NEW Challenger CPC-561 Hydraulic Conversion
40,000 lbs. capacity
Two speed load line winch
Si...
Updated: Tuesday, September 22, 2026 07:49 am
Location: Tulsa, Oklahoma, USA
Seller: Challenger Services
ROPS: Open
Stock Number: 93753
Description: WBM CANOPY, JOYSTICK BOOM CONTROLS, ENGINE COOLANT HEATER, 20" SINGLE GROUSE PADS WITH 2.' GROUSER HEIGHT, 20" SINGLE GROUSERS, RAIL HEIGHT 4", 20...
Updated: Wednesday, September 30, 2026 09:19 am
Location: Acheson, Alberta, Canada
Seller: Arrow-West Equipment Ltd.
ROPS: Open
Serial Number: 54X00502
Description: 35k lbs obo
40k lift
Updated: Wednesday, September 09, 2026 11:26 am
Location: Madera, California, USA
Seller: National Equipment, LLC
Hours: 3 970
ROPS: Open
Serial Number: 54X00394
Description: 1979 Caterpillar 561D crawler pipelayer, CAT 3306 diesel engine, naturally aspirated, powershift, lever steering, 2007 Midwestern 561MMC hydraulic ...
Updated: Thursday, September 24, 2026 07:03 am
Location: Carbondale, Pennsylvania, USA
Seller: Old Forge Power Equipment Inc.
ROPS: Open
Serial Number: 54X406
Description: 2011 Midwestern M561 Hydraulic Conversion, 18 ft 5 in Midwestern Side Boom, Winch, Drawbar, 20" Track Shoes, Excellent Undercarriage!
Updated: Thursday, August 27, 2026 12:12 pm
Location: Womelsdorf, Pennsylvania, USA
Seller: WEACO EQUIPMENT
ROPS: Open
Serial Number: 54X00731
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00731
Hydraulic conversion
40,000 lbs. capacity
OROPS
Two speed load line winch
Single speed boom winch
2...
Updated: Tuesday, September 22, 2026 07:49 am
Location: Tulsa, Oklahoma, USA
Seller: Challenger Services
ROPS: Open
Serial Number: 54X00667
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00667
Hydraulic conversion
40,000 lbs. capacity
OROPS
Two speed load line winch
Single speed boom winch
...
Updated: Tuesday, September 22, 2026 07:49 am
Location: Tulsa, Oklahoma, USA
Seller: Challenger Services
ROPS: Open
Serial Number: 54X00355
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00355
Challenger CPC-561 Hydraulic Conversion - 2013
40,000 lbs. capacity
OROPS
Two speed load line winch
Sing...
Updated: Tuesday, September 22, 2026 07:49 am
Location: Tulsa, Oklahoma, USA
Seller: Challenger Services
ROPS: Open
Serial Number: 54X00410
Stock Number: 561 Mechanical PL
Description: 561D Mechanical Pipelayer S/N 54X00410
Mechanical pipelayer – original Cat winches
40,000 lbs. capacity
Two speed load line winch
Single s...
Updated: Tuesday, September 22, 2026 07:49 am
Location: Tulsa, Oklahoma, USA
Seller: Challenger Services
ROPS: Open
Serial Number: 54X00337
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00337
Challenger CPC-561 Hydraulic Conversion - 2013
40,000 lbs. capacity
Two speed load line winch
Single...
Updated: Tuesday, September 22, 2026 07:49 am
Location: Tulsa, Oklahoma, USA
Seller: Challenger Services
ROPS: Open
Serial Number: 54X00643
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00643
Hydraulic Conversion
40,000 lbs. capacity
OROPS
Two speed load line winch
Single speed boom winch
...
Updated: Tuesday, September 22, 2026 07:49 am
Location: Tulsa, Oklahoma, USA
Seller: Challenger Services
ROPS: None
Serial Number: 54X00609
Description: Hyd Counterweight
CAT 3306 DI
Powershift Trans
Boom
35k lbs obo
40k lift
Updated: Wednesday, September 09, 2026 11:26 am
Location: Madera, California, USA
Seller: National Equipment, LLC