Tightening Torque

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The tightening torque depends on the duration of the impacting/tightening action. The largest tightening torque is achieved after approx. 6 to 10 Sec. impacting/tightening action.

The torque build-up depends on the following factors:

•Hardness of the bolts/nuts.

•Type of washer (disk washer, spring washer, seal).

•Hardness of the material to be joined.

•Lubricating effect at the surfaces of the junction.

This leads to the following application cases:

Hard case: The joining of metal to metal with a disk washer. The maximum torque is reached after a relative short impacting/ tightening action.

Medium case: The joining of metal to metal where spring ring washer, disk spring washer, stud bolts or bolts/nuts with conical seats are used.

Soft case: The joining of e.g. metal to wood or insulation material.

For middle or soft joining cases, the maximum tightening torque is less as for hard cases. Therefore, a longer impacting/tightening action is necessary to arrive at the maximum tightening torque.

FASTENING WITH SCREWS

This procedure shown in (Fig. 6) will enable you to fasten materials together with your tool without stripping, splitting or separating the material.

down. Set the nut or bolt snugly by slowing the tool to a stop. If this procedure is not followed, the tool will have a tendency to torque or twist in your hands when the nut or bolt seats.

First, clamp the pieces together and drill the first hole 2/3 the diameter of the screw. If the material is soft, drill only 2/3 the proper length. If it is hard, drill the entire length.

Second, unclamp the pieces and drill the second hole the same diameter as the screw shank in the first or top piece of wood.

FASTENING WITH SCREWS

1.Drill 2/3 diameter and 2/3 of screw length for soft materials, full length for hard materials.

2. Drill same diameter as screw shank.

3. Countersink same diameter as screw head.

Third, if flat head screw is used, countersink the hole to make the screw flush with the surface. Then, simply apply even pressure when driving the screw. The screw shank clearance hole in the first piece allows the screw head to pull the pieces tightly together.

RUNNING NUTS AND BOLTS

Variable speed control must be used with caution for driving nuts and bolts with socket set attachments. The technique is to start slowly, increasing speed as the nut or bolt runs

Screw

Apply a slight even pressure when driving screws.

FIG. 6

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PS40-2, PS40-2A, PS40B specifications

The Bosch Power Tools PS40B, PS40-2A, and PS40-2 are versatile cordless impact drivers designed to provide exceptional performance and convenience for both professionals and DIY enthusiasts. Renowned for their quality and durability, these tools boast features that make any fastening job easier and more efficient.

One of the standout features of the PS40 series is its compact and lightweight design, allowing users to operate in tight spaces without sacrificing power. With a mere weight of approximately 2.3 pounds, these impact drivers are easy to handle over extended periods, resulting in reduced user fatigue. Furthermore, the tools are equipped with a 1/4-inch hex chuck that enables quick and simple bit changes without needing additional tools, enhancing productivity during tasks.

The PS40B and PS40-2A models are powered by a robust 12-volt lithium-ion battery, offering a good balance between power and battery life. The battery technology features Bosch’s innovative Electronic Cell Protection, which helps to prolong the lifespan of the battery by preventing overheating and overcharging. This feature is complemented by a built-in battery gauge that provides users with real-time information on the charge status, allowing them to plan their work without unexpected interruptions.

Additionally, these impact drivers incorporate a powerful motor with a maximum torque output of up to 1,200 inch-pounds, making them more than capable of tackling stubborn screws and fasteners across various materials. The integrated two-speed transmission allows users to select between high-speed for rapid fastening and low-speed for more controlled driving, providing versatility for different applications.

Another advantage of the Bosch Power Tools PS40 series is their added safety features. The tools include an advanced built-in LED light that illuminates the work area, ensuring visibility even in dimly lit environments. This feature greatly improves accuracy and safety while working on complex projects.

In conclusion, the Bosch Power Tools PS40B, PS40-2A, and PS40-2 are exemplary impact drivers that combine performance, convenience, and innovative technology, making them an essential addition to any toolbox. With their lightweight design, powerful motor, long-lasting battery, and user-friendly features, these tools stand out as reliable choices for tackling a variety of fastening tasks efficiently. Whether you are a professional contractor or a weekend warrior, the PS40 series will meet—and often exceed—your expectations.

Bosch Power Tools PS40-2A Tightening Torque, Torque build-up depends on the following factors

Models: PS40-2 PS40-2A PS40B