Hydraulic Bucking Unit Manufacturer

Description

Goldenman GM Series · Oilfield Workshop Equipment

Goldenman GM Series hydraulic bucking units are designed for make-up, break-out, maintenance and servicing of drilling tools, downhole tools, testing tools, cementing tools and oilfield tubulars. The current GM range covers working sizes from 2 3/8" to 24" with maximum torque up to 260 kN·m.

Request a Technical Quote
Email Your Tool Size & Torque

22Model Configurations

2 3/8"–24"Working Size Range

260 kN·mMaximum Torque

HydraulicAutomatic Torque Control

Quick Selection: Select the GM series first by the maximum outside diameter of the tool or tubular, then confirm the required make-up / break-out torque and operating speed. Goldenman can match the model and optional functions to the actual workshop task before quotation.

Select a GM Bucking Unit by Size and Torque

The GM product family is arranged by maximum working diameter and available torque level. This first table helps procurement and maintenance teams identify the most relevant series before reviewing the complete model data.

GM Series	Maximum Nominal Size	Available Maximum Torque	Primary Selection Basis
GM 4 1/2	4 1/2"	25 kN·m	Compact tool and tubular range
GM 5 1/2	5 1/2"	25 kN·m	Small-diameter make-up / break-out
GM 7 5/8	7 5/8"	25 kN·m	Expanded small-to-medium diameter range
GM 9 5/8	9 5/8"	40 kN·m	Medium-diameter tools and tubulars
GM 10	10"	70 / 136 kN·m	Medium size with higher torque options
GM 13	13 3/8"	70 kN·m	Large outside diameter at moderate torque
GM 14	14"	150 / 180 kN·m	Large diameter with high torque
GM 18	18"	70 / 160 / 210 / 250 kN·m	Large tool range with multiple torque levels
GM 20	20"	70 / 110 kN·m	Large diameter with moderate torque options
GM 22	22"	160 kN·m	Extra-large diameter applications
GM 24	24"	70 / 96 / 140 / 160 / 210 / 260 kN·m	Largest size range and widest torque selection

Applications

GM hydraulic bucking units are intended for controlled assembly, disassembly, maintenance and servicing of threaded oilfield tools and tubular products.

Drilling Tools

Make-up and break-out support for threaded drilling-tool assemblies during workshop servicing and maintenance.

Downhole Tools

Hydraulic clamping and rotational torque for disassembly, repair and reassembly of downhole tool components.

Testing Tools

Controlled make-up and break-out for threaded testing-tool assemblies during inspection and servicing work.

Cementing Tools

Workshop handling of threaded cementing-tool components for assembly, maintenance and repair.

Oilfield Tubulars

Applicable models cover a broad tubular and tool outside-diameter range from 2 3/8" to 24".

Repair & Service Workshops

A practical platform for repeated make-up, break-out and tool maintenance tasks requiring controlled hydraulic operation.

GM Series Product Features

Up to 260 kN·m Torque

The GM range provides multiple torque classes from 25 kN·m up to 260 kN·m for different make-up and break-out requirements.

2 3/8"–24" Working Range

Twenty-two configurations cover small, medium, large and extra-large oilfield tools and tubulars.

Hydraulic Control

The machine uses hydraulic control to provide stable clamping and rotational force during assembly and disassembly operations.

Automatic Torque Control

A torque automatic control system is included in the standard configuration of the supplied product data.

Fast Spinning Function

Fast spinning capability supports quicker thread run-in and run-out before or after the high-torque stage.

Stable Anti-Slip Gripping

The hydraulic clamping design is intended to maintain secure gripping during make-up and break-out without unnecessary slipping.

GM Hydraulic Bucking Unit Technical Specifications

Use the table below to compare the complete GM series by working size, hydraulic flow, maximum torque and rotational speed.

Model	Size Range	Rated Pressure	Working Flow	Max. Torque	Max. Torque	Speed
GM 4 1/2-25	60–114.3 mm / 2 3/8"–4 1/2"	≥16 MPa / ≥2320 PSI	80–120 L/min	25 kN·m	18.45 kft·lbs	0–10 rpm
GM 5 1/2-25	60–139.7 mm / 2 3/8"–5 1/2"	≥16 MPa / ≥2320 PSI	80–120 L/min	25 kN·m	18.45 kft·lbs	0–6 rpm
GM 7 5/8-25	60–195 mm / 2 3/8"–7 5/8"	≥16 MPa / ≥2320 PSI	80–160 L/min	25 kN·m	18.45 kft·lbs	0–6 rpm
GM 9 5/8-40	60–244.5 mm / 2 3/8"–9 5/8"	≥16 MPa / ≥2320 PSI	80–160 L/min	40 kN·m	29.52 kft·lbs	0–6 rpm
GM 10-70	60–254 mm / 2 3/8"–10"	≥16 MPa / ≥2320 PSI	80–160 L/min	70 kN·m	51.66 kft·lbs	0–6 rpm
GM 10-136	60–254 mm / 2 3/8"–10"	≥16 MPa / ≥2320 PSI	80–160 L/min	136 kN·m	100 kft·lbs	0–6 rpm
GM 13-70	60–339.7 mm / 2 3/8"–13 3/8"	≥16 MPa / ≥2320 PSI	80–160 L/min	70 kN·m	51.66 kft·lbs	0–6 rpm
GM 14-150	60–355.6 mm / 2 3/8"–14"	≥16 MPa / ≥2320 PSI	120–230 L/min	150 kN·m	110.7 kft·lbs	0–6 rpm
GM 14-180	60–355.6 mm / 2 3/8"–14"	≥16 MPa / ≥2320 PSI	120–230 L/min	180 kN·m	132.84 kft·lbs	0–6 rpm
GM 18-70	60–457.2 mm / 2 3/8"–18"	≥16 MPa / ≥2320 PSI	120–230 L/min	70 kN·m	51.660 kft·lbs	0–10 rpm
GM 18-160	60–457.2 mm / 2 3/8"–18"	≥16 MPa / ≥2320 PSI	120–230 L/min	160 kN·m	118.08 kft·lbs	0–6 rpm
GM 18-210	60–457.2 mm / 2 3/8"–18"	≥16 MPa / ≥2320 PSI	120–230 L/min	210 kN·m	154.98 kft·lbs	0–6 rpm
GM 18-250	60–457.2 mm / 2 3/8"–18"	≥16 MPa / ≥2320 PSI	120–230 L/min	250 kN·m	183.82 kft·lbs	0–6 rpm
GM 20-70	60–550 mm / 2 3/8"–20"	≥16 MPa / ≥2320 PSI	120–230 L/min	70 kN·m	51.66 kft·lbs	0–6 rpm
GM 20-110	60–550 mm / 2 3/8"–20"	≥16 MPa / ≥2320 PSI	120–230 L/min	110 kN·m	81.18 kft·lbs	0–6 rpm
GM 22-160	60–558.8 mm / 2 3/8"–22"	≥16 MPa / ≥2320 PSI	120–230 L/min	160 kN·m	118.08 kft·lbs	0–6 rpm
GM 24-70	60–615 mm / 2 3/8"–24"	≥16 MPa / ≥2320 PSI	120–230 L/min	70 kN·m	51.66 kft·lbs	0–7 rpm
GM 24-96	60–615 mm / 2 3/8"–24"	≥16 MPa / ≥2320 PSI	120–230 L/min	96 kN·m	70.848 kft·lbs	0–8 rpm
GM 24-140	60–615 mm / 2 3/8"–24"	≥16 MPa / ≥2320 PSI	120–230 L/min	140 kN·m	103.32 kft·lbs	0–12 rpm
GM 24-160	60–615 mm / 2 3/8"–24"	≥16 MPa / ≥2320 PSI	120–230 L/min	160 kN·m	118.08 kft·lbs	0–7 rpm
GM 24-210	60–615 mm / 2 3/8"–24"	≥16 MPa / ≥2320 PSI	120–230 L/min	210 kN·m	154.98 kft·lbs	0–5 rpm
GM 24-260	60–615 mm / 2 3/8"–24"	≥16 MPa / ≥2320 PSI	120–230 L/min	260 kN·m	191.88 kft·lbs	0–5 rpm

Technical values above follow the supplied GM model data. Final model selection should be confirmed against the actual tool outside diameter, required torque and operating configuration.

Need Help Selecting the Correct GM Model?

Send the maximum tool OD, required make-up / break-out torque, tool or tubular type and preferred control configuration. Goldenman can identify the closest GM series for technical and commercial review.

Request Model Selection & Quote
Send Parameters by Email

Standard Configuration & Available Functions

Standard Configuration

Bucking unit main machine
Hydraulic power system
Torque automatic control system
Manual-control console

Control & Functional Options

Electric control operation
Foot pedal
Left / right feed rail
Left / right hydraulic support stand
Eccentric device
Ultra-short-distance clamping device
No-mark function
Back-up tongs opening function
Pull / push device

Optional functions are selected according to the required tool geometry and operating arrangement. Confirm the required configuration in the RFQ.

How to Select the Right Bucking Unit

Confirm the Maximum Tool Outside DiameterStart with the largest OD that must be clamped. This determines the minimum GM frame size.

Define the Required Make-Up / Break-Out TorqueChoose a torque class that meets the connection requirement without selecting the machine by diameter alone.

Check the Required Spinning SpeedCompare available rpm where fast thread run-in or run-out is important to the workshop cycle.

Select Control and Handling FunctionsConfirm manual or electric control and any required support, feed, clamping or no-mark functions.

Send the Working Conditions for Final ConfirmationProvide the tool type, OD, torque requirement and required functions so Goldenman can confirm the model before quotation.

Quality & Technical Confirmation

For model selection and order confirmation, the equipment configuration should be matched to the required working diameter, torque level, hydraulic pressure and flow range, rotational speed, control method and selected optional functions. These fields should be included in the technical quotation and purchase specification so the delivered GM configuration matches the intended workshop task.

Related Goldenman Oilfield Equipment

Frequently Asked Questions

What is the GM hydraulic bucking unit used for?

The GM Series is used for make-up, break-out, maintenance and servicing of drilling tools, downhole tools, testing tools, cementing tools and various oilfield tubular products.

What size range is available?

The current GM range covers nominal working sizes from 2 3/8" up to 24", depending on the selected model.

What is the maximum available torque?

The highest listed torque is 260 kN·m on the GM 24-260. Other GM models provide lower torque classes for different size and operating requirements.

How do I choose between GM models with the same maximum diameter?

Choose first by the required working diameter, then compare maximum torque and speed. For example, the GM 24 series is available with several torque levels from 70 to 260 kN·m.

Is automatic torque control available?

Yes. The supplied configuration data lists the torque automatic control system as a standard configuration.

Is electric control available?

The standard console uses manual operation. Electric control operation is listed as an available option.

Can one GM bucking unit handle different tool diameters?

Yes, each model has a specified working size range. Final suitability depends on the actual tool OD, required clamping arrangement and required torque.

What information should I send for a quotation?

Send the tool or tubular type, minimum and maximum outside diameter, required make-up / break-out torque, preferred control method, required optional functions, quantity and any available drawings or photographs.

Request a GM Bucking Unit Technical Quote

Tell us the tool size, required torque and operating requirements. Goldenman will review the GM model range and prepare a technical and commercial quotation for your application.

Request a Technical Quote
info@goldenman.com

Oilfield Hydraulic Bucking Unit for Make-Up & Break-Out

Oilfield Hydraulic Bucking Unit for Make-Up & Break-Out

Description

Select a GM Bucking Unit by Size and Torque