1/2″ Square Input, 3/4″ Square Output, 950 ft-lb Bar Style Manual Torque Multiplier

The manual torque multiplier MTMB950 belongs to the Snap-on manual torque multipliers range, and Lost in HCM supplies it to workshops and factories across Vietnam. The torque ratio is 5:1. The torque output, minimum ft-lb is 96.

Manual torque multiplier MTMB950 overview

The manual torque multiplier MTMB950 turns a small hand torque into a large, controlled output. A gear train inside the body multiplies your input by a fixed ratio. As a result, one person can tighten or loosen bolts that need thousands of ft-lb.

This family comes in three styles: compact, bar, and plate. Ratios run from 5:1 up to 135:1, while maximum outputs range from 730 ft-lb to 25,000 ft-lb. Snap-on lists Great Britain as the country of origin for every model.

The anti-wind-up is No. The reaction type is Bar and Cranked. Snap-on lists the country of origin as GBR.

The torque output, minimum n•m is 130. The input drive female square is 1/2 inches. The certification is No.

The output drive male square is 3/4 inches. Its torque output, maximum ft-lb is 950. Its torque output, maximum n•m is 1,300.

Specifications at a glance

These figures come from the Snap-on listing for MTMB950. Values marked “calculated” are unit conversions we added for convenience.

How the manual torque multiplier works

A torque multiplier uses a set of gears to trade turning speed for force. You turn the input many times, while the output turns slowly with much more torque. So a 25:1 ratio turns 100 ft-lb in into about 2,500 ft-lb out.

The body would spin the other way unless something holds it. That is why each multiplier has a reaction bar, plate, or fixture. First, you rest the reaction on a solid point. Then you turn the input with a torque wrench.

Key features of the manual torque multiplier MTMB950

The details below explain how ratio, style, and reaction shape the way a multiplier works. They also show what to check before you add one to your heavy bolting kit.

• Three body styles. Compact, bar, and plate styles each suit a different job and space. For example, bar styles fit heavy vehicle kits, while plate styles handle the highest outputs in the range.
• Ratios from 5:1 to 135:1. Low ratios give faster rundown, while high ratios reach big outputs from a small input. Therefore, you can match the ratio to the torque wrench your team already owns.
• Outputs up to 25,000 ft-lb. Maximum outputs run from 730 ft-lb on the smallest model to 25,000 ft-lb on the largest. So one family covers most heavy bolting in a plant.
• Accuracy better than ±4%. Snap-on states accuracy better than ±4% for true torque multiplication in this family. In addition, several models list a unique calibration certificate for each unit.
• Standard anti-wind-up ratchet. Ten of the thirteen models have an anti-wind-up ratchet fitted as standard. It keeps the gears loaded between strokes, so operation stays smoother and safer.
• Choice of reaction types. Reactions include plate, bar, bar and cranked, and interchangeable fixtures. As a result, you can rest the tool on a nearby nut, frame, or flange edge.

Snap-on data sheet notes

In addition, the Snap-on data sheet for MTMB950 notes:

• Compact dimensions allow excellent access and easy handling.
• Maximum torque output of 950 ft-lb.
• Supplied with two reaction styles for maximum versatility.
• Accuracy guaranteed better that ±4%.

Typical applications

A manual torque multiplier earns its place where torque is high and power is scarce. The tasks below are the most common uses we see from buyers in Vietnam each year.

• Truck and bus wheel nuts. Heavy vehicle wheel nuts need high torque at the roadside or in the depot. A bar style multiplier with a cranked reaction can rest on the next stud for each nut.
• Flange and pipe bolts. Large flanges on pumps, valves, and pipelines need even torque in steps. Therefore, crews use a multiplier to bring each bolt up to spec in several passes.
• Mining and earthmoving machines. Track shoes, sprockets, and frame bolts on mining gear need very high torque. So mechanics use a compact multiplier where a power tool cannot fit or run.
• Seized bolt removal. Rusted or seized bolts often need more breakaway torque than their install value. In addition, a multiplier frees them with steady force instead of shock loads.
• Rail and track maintenance. Rail rolling stock and track hardware use large fasteners in fixed patterns. For example, a plate style model suits bolts where the crew can react on a frame member.
• Power generation bolting. Generator, turbine, and transformer bolts need controlled torque during outages. Meanwhile, a manual multiplier needs no air or power, so it works in any part of the plant.

Industries that use the manual torque multiplier MTMB950

Torque multipliers matter wherever bolts need more torque than a hand wrench can give. The industries below rely on them for heavy joints. Many of these teams work on FDI sites across Vietnam.

• Oil and gas. Offshore and onshore sites torque large flanges and valve bolts in every shutdown. In Vietnam, crews at coastal facilities use manual multipliers where power tools add risk or need permits.
• Mining and quarrying. Coal and stone mines in northern Vietnam run large haul trucks, crushers, and loaders. Therefore, their workshops use multipliers to torque track, wheel, and frame bolts.
• Heavy fleet and transport. Bus, truck, and trailer fleets tighten large wheel nuts every day. So depots across Vietnam keep bar style multipliers in service vans for roadside work.
• Power generation. Thermal, hydro, and wind plants need high torque on turbine and generator bolts. In addition, a manual multiplier works during outages when power and air may be off.
• Railway maintenance. Rail yards and track crews torque large bolts on bogies, couplings, and track parts. For example, a compact multiplier fits tight spaces under rolling stock.
• Aviation ground support. Airport ground equipment and engine stands use large fasteners that need set values. Meanwhile, MRO teams at Vietnamese airports use multipliers for those rare high-torque jobs.

Manual torque multiplier MTMB950 compared with similar brands

Before you buy, compare ratio, output, reaction style, and local service. However, the best multiplier also matches the torque wrench you plan to use. The comparison below places the manual torque multiplier MTMB950 next to other known lines.

With wide outputs and three body styles, this Snap-on family is easy to match to each job. In addition, most models hold the load with an anti-wind-up ratchet. Even so, confirm current specs with each maker. Specifications change over time, so confirm current data with each maker before you decide.

Choosing the right model

• Start with the highest torque your joints need, then add some margin. Pick a model whose maximum output sits above that value.
• Check the input torque at your target, then match it to your torque wrench. For example, a 25:1 ratio needs 80 ft-lb in for 2,000 ft-lb out.
• Match the output square to your impact sockets. Output drives in this family run from 3/4 inch up to 2-1/2 inch, so size matters.
• Look at the space around the joint before you choose a style. Compact models fit tight spots, while bar models suit wheel nuts and open frames.
• Choose a model with an anti-wind-up ratchet for high ratios. It holds the load between strokes, so the operator can reset safely.
• Read the warranty line on each product page. Some models list a one-year Snap-on Repair Center term, while others follow the supplier warranty.

For other sizes in the same range, compare 3/4" Square Input, 1" Square Output, 1,990 ft-lb Bar Style Manual Torque Multiplier, 1/2" Drive Input, 1" Drive Output, 2,950 ft-lb (4,000 N•m) Compact Manual Torque Multiplier, 1/2" Square Input, 1" Square Output, 2,200 ft-lb Bar Style Manual Torque Multiplier, 1/2" Square Input, 1" Square Output, 3,300 ft-lb Bar Style Manual Torque Multiplier. Also browse the full Snap-on torque tools shop for handles, testers and adapters.

Care, storage and calibration

• Store the multiplier in its case or on a clean shelf. Also cover the input and output squares, because dirt in the gears adds friction.
• Wipe off grit, oil, and water after each job, then dry the body. In addition, check the reaction for cracks or bends before you use it again.
• Have the multiplier and its torque wrench checked every 12 months, in line with common ISO 6789 practice. We can arrange recalibration through an accredited laboratory.
• Never exceed the maximum output on the label, and never use an impact tool on the input. Shock loads can damage the gears, so stop if the tool feels rough.
• Pack the tool in its carrying case for transport between sites. Meanwhile, keep it dry during the humid season so the gears and squares stay free of rust.

Frequently asked questions

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