Sturtevant Richmont Adjustable Torque Screwdriver Training Guide: CAL 36/4 and CAL 40

Introduction:

The Sturtevant Richmont (SR) Adjustable Torque Screwdrivers are precision torque tools designed for applications requiring accurate and repeatable torque settings. This guide will cover the basic operation, maintenance, and calibration of the CAL 36/4 and CAL 40 models.

Table of Contents:

Overview of SR Adjustable Torque Screwdrivers

Components and Specifications

Operating Instructions

Adjusting Torque Settings

Maintenance and Storage

Calibration Procedure

Overview of SR Adjustable Torque Screwdrivers

The CAL 36/4 and CAL 40 are adjustable torque screwdrivers that offer a wide range of torque settings, making them ideal for various assembly and repair tasks. These tools feature a comfortable grip, an easy-to-read torque scale, and a slip-clutch mechanism that ensures consistent and accurate torque delivery.

Components and Specifications
CAL 36/4:

Torque range: 3.0 to 36.0 cNm (0.44 to 5.31 in-lb)
Increment: 0.5 cNm
Length: 143 mm
Weight: 130 g
CAL 40:

Torque range: 4.0 to 40.0 cNm (0.59 to 5.92 in-lb)
Increment: 1.0 cNm
Length: 145 mm
Weight: 135 g

Operating Instructions

a. Inserting/Changing Bits:
Pull the bit holder’s collar back.
Insert the desired bit into the holder.
Release the collar to lock the bit in place.
b. Using the Torque Screwdriver:

Adjust the torque setting according to your requirements (refer to section 4 for instructions).

Grip the screwdriver handle comfortably and align the bit with the fastener.

Apply steady pressure and turn the screwdriver clockwise to tighten or counterclockwise to loosen the fastener.

The screwdriver will “slip” or “break” when the preset torque is reached, indicating that the desired torque has been achieved.

Adjusting Torque Settings

a. CAL 36/4:

Pull the torque adjustment collar back and rotate the handle until the desired torque value is aligned with the index line.
Release the collar, allowing it to lock the setting in place.
b. CAL 40:

Loosen the locking ring at the base of the handle by turning it counterclockwise.

Rotate the handle until the desired torque value is aligned with the index line.

Tighten the locking ring by turning it clockwise to lock the setting in place.

Maintenance and Storage

a. Keep the torque screwdriver clean and free from dirt, grease, and debris. Use a soft cloth to wipe the tool after each use.
b. Avoid dropping or striking the torque screwdriver, as this may affect its accuracy.
c. Store the tool in its protective case or a clean, dry environment when not in use.
d. Periodically lubricate the internal components with a light oil or grease to ensure smooth operation and prevent corrosion.
e. Do not disassemble the torque screwdriver unless necessary for maintenance or calibration. If disassembly is required, follow the manufacturer’s instructions or consult a qualified service technician.

Calibration Procedure

It is essential to calibrate the torque screwdriver periodically to ensure accurate torque settings. The recommended calibration interval depends on the tool’s usage and criticality of the application. Generally, it is advised to calibrate the tool at least once a year or every 5,000 cycles, whichever comes first.

a. Prepare the calibration equipment, including a torque tester, adapter, and appropriate bit.
b. Set the torque screwdriver to its lowest torque setting.
c. Connect the torque screwdriver to the torque tester using the adapter and bit.
d. Apply torque to the tester in the tightening (clockwise) direction until the screwdriver slips or breaks.
e. Record the torque value displayed on the tester.
f. Repeat steps d and e for a total of five trials at the lowest setting.
g. Calculate the average torque value of the five trials and compare it to the desired torque setting. If the average is within the acceptable tolerance range specified by the manufacturer, proceed to the next torque setting. If not, adjust the tool according to the manufacturer’s instructions or consult a qualified service technician.
h. Repeat steps b through g for all torque settings on the screwdriver.
i. If all settings are within the acceptable tolerance range, the calibration is complete. Document the calibration results and update the calibration records as required by your organization’s quality management system.

j. If any torque settings are outside the acceptable tolerance range, follow the manufacturer’s instructions for making adjustments or consult a qualified service technician.

k. After adjustments, retest the torque settings following steps b through g to confirm they are within tolerance.

l. Once the torque screwdriver passes calibration, affix an updated calibration sticker or label to the tool and store the calibration certificate as per your organization’s requirements.

Conclusion:

By following this training guide, you should be familiar with the operation, maintenance, and calibration of the Sturtevant Richmont Adjustable Torque Screwdrivers CAL 36/4 and CAL 40. Proper use and maintenance of these precision tools will ensure accurate torque application and prolong the life of the torque screwdriver. Remember to calibrate the tool periodically to maintain its accuracy and comply with your organization’s quality management system.