Torque Limiter for Industrial Overload Protection

During overload, the balls or rollers disengage from the recesses, causing slippage between the driving and driven components, thus preventing damage caused by overload. The moving ring performs an "S"-shaped axial movement, triggering a signal from the installed limit switch or proximity switch. This signal can be used to control or cut off the power source.

We recommend using a bypass circuit that bypasses the limit switches and sensors to quickly restart the power equipment.

Anwendervariabel durch Baukastensystem

Teileliste:

1 Nabe

2 Flanschring

3 Schaltring

4 Einstellmutter

5 Tellerfeder

6 Kugelkafig

7 Gleitbuchse

8 Axialscheibe

9 Axialnadellager

10 Stellschraube

11 Sicherungsscheibe

Freischaltkupplung (lasttrennend)

- Maximum slip torque up to 8200 Nm

- Maximum allowable speed: 5000 rpm

- Complete disengagement maintained between drive end and driven end

- Manual re-engagement after slip

- Signal output via limit switch or electronic sensor upon slippage

- Available with XL-type elastic coupling for shaft-to-shaft connection

- Easy installation and commissioning

Working Principle of Slipping & Freewheeling Torque Limiter for Industrial Overload Protection:

— Slippage occurs immediately when overload reaches the set slip torque.

— The drive end and driven end can remain completely disengaged.

— Re-engagement can be performed manually or mechanically.

Re-engagement Operation Instructions:

After slippage, re-engagement of the slipping freewheeling torque limiter can be achieved simply by applying an axial force to the shifting ring (2). This operation can be performed with various tools. — Directly strike the shifting ring axially with a rubber mallet (3) (see figure on the left) — Use a lever (4) — Use a pneumatic or hydraulic engagement device (automatic re-engagement)

● Standard JTA-SR Torque Limiter for Industrial Overload Protection with slip torque up to 8,200 Nm

● Ready for installation after torque setting

● Directly mountable with customer's transmission components

● Three reset types available: indexing type, synchronous type and fail-safe type ● Torque can be set while mounted on the equipment

● Finished bore tolerance: H7 (per ISO standard); keyway width tolerance: JS9 (per DIN 6885/1 standard)

● Surface treated with phosphating

1)T4TB and SXR types: Tightening torque is based on the standard for Class 12.9 screws.

2) Size 6: Dimension t = 15 mm; Size 7: Dimension = 21 mm

● JTA-SL torque limiter for shaft-to-shaft connection

● Axial insertion for easy installation

● Compensates for installation misalignment

● Three reset types available: indexing type, synchronous type and fail-safe type ● Torque can be set while mounted on the equipment

● Various elastomer elements available for selection

● Finished bore tolerance: H7 (per ISO standard); keyway width tolerance: JS9 (per DIN 6885/1 standard)

FAQ

Q1: What is the operating principle of this industrial overload protection torque limiter?

A: This Torque Limiter for Industrial Overload Protection functions as a disengaging-type safety clutch. Internally, it relies on the engagement of steel balls within corresponding grooves to facilitate normal power transmission. When the equipment encounters a jam, shock load, or momentary overload—exceeding the preset slip torque—the steel balls automatically disengage from the grooves. This causes the driving and driven ends to undergo relative slippage and completely separate, thereby directly cutting off the power source and protecting critical, high-value components such as motors, reducers, and transmission shafts. Upon an overload trigger, the device's "moving ring" undergoes an S-shaped axial displacement; this movement can be paired with limit switches or proximity sensors to generate electrical signals, enabling operators to promptly diagnose and troubleshoot faults.

Q2: Can the device automatically reset after an overload is triggered?

A: This disengaging-type torque limiter does not automatically reset after an overload disengagement occurs; the driving and driven ends remain in a completely disconnected state until manually reset or reset with the aid of external equipment. We offer three reset modes: indexed, synchronous, and fail-safe. For standard operations, resetting can be achieved by axially tapping the moving ring with a rubber mallet or by utilizing a lever mechanism; for high-frequency operating conditions, pneumatic or hydraulic components can be installed to enable automated resetting.

Q3: Can external sensors or switches be connected to enable a linked alarm and power-cutoff system?

A: When the product slips due to an overload, the axial displacement generated by the moving ring can directly trigger an external limit switch or proximity sensor, generating a corresponding electrical signal. Companies can integrate this with a bypass control circuit; upon receiving the signal, the system can rapidly cut off the equipment's power supply, alerting personnel to diagnose issues such as material jams or excessive loads. This approach provides a dual layer of protection—spanning both software and hardware—to prevent secondary damage to the equipment.

Q4: What are the specific differences between the JTA-SR and JTA-SL series, and how should one select the appropriate model? A: The JTA-SR is a general-purpose assembly model; once the torque setting is complete, it can be directly integrated with the customer's own transmission components, accommodating various mounting structures such as flanges, sprockets, and gears. The JTA-SL is designed specifically for shaft-to-shaft coupling scenarios; it supports axial-insertion mounting and features built-in elastic cushioning elements. In addition to providing overload protection, it can also compensate for installation misalignment. It is designed to be used directly in conjunction with XL-type flexible couplings and is frequently utilized in assembly lines and synchronized transmission equipment.

Q5: Can the protection torque value be adjusted directly while the equipment is in operation?

A: The Torque Limiter for Industrial Overload Protection supports on-the-fly torque adjustment—meaning there is no need to remove the product or dismantle the transmission mechanism. Operators can precisely modify the slip protection threshold simply by adjusting the nut located at the end of the unit to alter the preload of the internal disc springs. This allows the device to adapt to the varying protection requirements associated with different production stages and material loads, thereby significantly simplifying the commissioning process.