Snap-on MTMB3300 Torque Multiplier, Bar Style Manual, 1/2″ Input, 1″ Output, 3,300 ft-lb

Description

When a joint calls for more than 4,000 N·m and no air or hydraulic supply sits nearby, a manual gearbox often wins. The Snap-on MTMB3300 torque multiplier fills that role with a 3,300 ft-lb rating, roughly 4,474 N·m. It accepts a 1/2″ square input and drives a 1″ square output. Meanwhile, a bar style reaction arm carries the counter force to a nearby stop.

Sizing the job before you order

Start with the highest joint value on the drawing. Then compare it with the rating and leave a working margin, because no tool should run at its limit on every pull. For example, a 2,800 ft-lb spec suits the MTMB3300 better than the 2,200 ft-lb MTMB2200. On the other hand, a set of 1,500 ft-lb joints does not need this much capacity, and a smaller unit is easier to carry.

Reaction bar placement

The bar must push against something stronger than the load. Good stops include an adjacent nut on the same flange, a frame web or a purpose-made reaction plate. Set the bar square to the stop, and keep the contact point close to the output axis where you can. Also check the rotation direction before you pull, since the MTMB3300 housing swings the opposite way. Keep hands and cables out of that path.

Field jobs for the Snap-on MTMB3300 torque multiplier

• Yaw and pitch bearing bolts during wind turbine service.
• Heat exchanger and reactor flange bolts at refinery turnarounds.
• Shovel, dragline and crusher frame bolts in mining.
• Main engine and shaft bracket bolts in shipyards.

Calculating the input setting

Look up the ratio and any loss factor in the MTMB3300 manual before the first pull. Divide your target by that effective ratio to get the input value. Next, choose a calibrated 1/2″ input wrench that reaches the value near mid-scale. After that, record the target, the input setting and both tool serial numbers on the job sheet.

Care after an outage

Clean the drive squares and inspect the bar for bends once the work ends. Store the Snap-on MTMB3300 torque multiplier in its case, away from moisture. In addition, keep impact tools off the input, because shock loads can damage the gear train. Send the multiplier and its input wrench together for an outside calibration check when your procedure calls for one.

Ordering the Snap-on MTMB3300 torque multiplier in Vietnam

SMK Vietnam shows this unit for our partner Lost in HCM, who supplies it and issues the quote. List your joint values, quantity and site, then request a quote from Lost in HCM. You can also compare other torque multipliers or contact SMK Vietnam for advice on the next step. Snap-on keeps brand details on snapon.com.

MTMB3300 planning questions

How does the MTMB3300 compare with the MTMB2200?

Both take a 1/2″ input and drive a 1″ output. The MTMB3300 carries 3,300 ft-lb, while the MTMB2200 tops out at 2,200 ft-lb.

What socket goes on the output?

Use a heavy-duty 1″ square drive socket sized to your nut, since the MTMB3300 output is a 1″ square.

What is the metric rating?

Roughly 4,474 N·m, because 1 ft-lb equals about 1.356 N·m. Still, plan MTMB3300 work in the unit your drawing uses.