Mechanical Overload Protectors : Torq Gard
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FAQ
No-backlash high performance overload protectors, 4 different series using cams or balls and with preset torque within ±3% to ±10%. Select the best unit for your application.
Standard models
| Rating | Bore Range | |
|---|---|---|
| N·m | {kgf·m} | mm |
| 0.294 - 7154 | {0.03 - 730} | φ6 - 130 |
·Ready-made bore types are also available.
Torq Gard, Torq Gard Coupling and Axial Gard FAQ
- Q1. Do the Torq Gards, Torq Gard Couplings, and Axial Gards conform to RoHS standards?
- Q2. What is the allowable temperature range?
- Q3. What is the life span of the Torq Gards, Torq Gard Couplings and Axial Gards?
- Q4. Can I use the products in an environment where they may be splashed with oil and/or water?
- Q5. I purchased the TGB30-L and when I went to verify its torque with our machine, the amount of torque was found to be insufficient. I would like to switch to the TGB30-H. What do you recommend I do?
- Q6. I am currently using a Torq Gard but it won’t trip when the machine overloads. What do you believe is the likely cause?
- Q7. I would like to use a Torq Gard Coupling for my machine. Does it matter which direction the Torq Gard Coupling is installed on the driven or drive sides?
- Q8. I would like to use a high precision TGX with a high-speed shaft, but it cannot stop instantaneously after trip. Is there something you can recommend?
- Q9. I would like to install a sprocket in the TGB Series. What are the recommended sprocket machining dimensions?
- Q1. Do the Torq Gards, Torq Gard Couplings, and Axial Gards conform to RoHS standards?
- A1. The TGB, TGX and TGZ Series are already compliant. We are now selling
off all current TGM, and TGA Series stock, so if you require RoHS compliant
products, please indicate this when ordering.
- Q2. What is the allowable temperature range?
- A2. –10°C --- 100°C. If the temperature is outside this range, please
consult with Tsubaki Emerson.
- Q3. What is the life span of the Torq Gards, Torq Gard Couplings and Axial Gards?
- A3. The TGB, TGX, TGZ and TGA Series are rated at ten thousand trips, and
the TGM Series is rated at one hundred thousand trips; however, if the machine
does not stop tripping then the rating is meaningless. If it trips frequently,
the trip torque will gradually decrease, so tighten the adjusting nut (bolts)
and set screws as necessary.
- Q4. Can I use the products in an environment where they may be splashed with oil and/or water?
- A4. The TGM Series is the sealed type so it excels in environments that are
wet, oily or dusty. For other series, it is sometimes possible to upgrade them
with these specifications. Please contact TEM for more information.
- Q5. I purchased the TGB30-L and when I went to verify its torque with our machine, the amount of torque was found to be insufficient. I would like to switch to the TGB30-H. What do you recommend I do?
- A5. The only difference between TGB30-L and TGB30-H are the springs used. If
the spring is changed, the TGB30-L will become the TGB30-H, but the torque
adjusting indicator does not correspond with the set torque that is labeled on
the product. The TGX and TGZ Series’ are the same. If you use the Torq Gard as
is, there should be no problems, but if a torque indicator is necessary, return
the Torq Gard to TEM and the disk spring will be changed, the torque will be set
to the minimum point and the torque indicator will be re-attached. Once this is
finished, it will be re-shipped to you. Please contact your local dealer for
more information.
- Q6. I am currently using a Torq Gard but it won’t trip when the machine overloads. What do you believe is the likely cause?
- A6. There is a possibility that the adjusting nut (bolts) have been
tightened too much. Excessive tightening eliminates the disk's deflection,
causing the Torq Gard to be unable to trip, thus rendering it useless as an
overload protection device.
Refer to the catalog or manual for nut rotating angles and torque correlation diagrams. Never exceed the allowable torque limit by over-tightening the nut.
- Q7. I would like to use a Torq Gard Coupling for my machine. Does it matter which direction the Torq Gard Coupling is installed on the driven or drive sides?
- A7. It is possible to install a Torq Gard Coupling in either direction. But
be aware that the maximum installable shaft diameter is different on the Torq
Gard side and coupling side.
- Q8. I would like to use a high precision TGX with a high-speed shaft, but it cannot stop instantaneously after trip. Is there something you can recommend?
- A8. The TGXZ Series has non-backlash and complete release features. The TGXZ
Series is made up of the TGX Series (non-backlash) and the TGZ Series (complete
release). Though it is a special MTO, it can perform in a number of possible
ways. Please contact TEM for more information.
- Q9. I would like to install a sprocket in the TGB Series. What are the recommended sprocket machining dimensions?
- A9.Drive member recommended machining dimensions:
Series Drive member recommended machining dimension A B C D E F TGB08-L,M,H 34 3 3.4 40H7 28 3 TGB12-L,M,H 40 3 4.5 48H7 33 3 TGB16-L,M,H 50 3 4.5 58H7 41 3 TGB20-H 78 4 5.5 90H7 64 3 TGB30-L,H 100 6 6.6 113H7 84 4 TGB50-L,M,H 142 6 9.0 160H7 124 5 TGB70-H 200 6 11 220H7 172 5 TGB90-L,H 265 8 13.5 295H8 240 5 TGB110-L,H 325 6 17.5 355H8 292 5 TGB130-L,H 360 8 17.5 400H8 325 5
