SIT TRASCO ES GESM Hubs (Clamping)
GESM clamping hubs are parts designed for SIT TRASCO ES zero-backlash shaft couplings. They are sometimes called GES M series TRASCO ES hubs.
SIT TRASCO ES are torsionally flexible, puncture-proof shaft couplings with two metal hubs with front claws and a polyurethane element. They transmit torque through a high-precision pressure-stressed elastic star-shaped buffer which absorbs shock and torsional vibration. The hubs are manufactured with minimal backlash so that the flexible elements are very tightly inserted into the front teeth to make a so-called zero-backlash coupling. These GESM hubs are made of steel or aluminium alloy with a clamping joint and tightening screw.
Products are sorted by name in ascending order.
TRASCO ES 7 GESM (GESM7F3) - Hub (d = 3F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.68€ excl. VAT
12.93€ incl. VAT
TRASCO ES 7 GESM (GESM7F4) - Hub (d = 4F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.68€ excl. VAT
12.93€ incl. VAT
TRASCO ES 7 GESM (GESM7F5) - Hub (d = 5F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.68€ excl. VAT
12.93€ incl. VAT
TRASCO ES 7 GESM (GESM7F6) - Hub (d = 6F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.68€ excl. VAT
12.93€ incl. VAT
TRASCO ES 7 GESM (GESM7F7) - Hub (d = 7F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.68€ excl. VAT
12.93€ incl. VAT
TRASCO ES 9 GESM (GESM9F10) - Hub (d = 10F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.72€ excl. VAT
12.97€ incl. VAT
TRASCO ES 9 GESM (GESM9F10C) - Hub (d = 10F7, with Keyway, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
Price on Request The shaft coupling price is calculated after receiving information about up-to-date prices from our suppliers. Please, fill in your email address and the required number of pieces and submit the form on the product page. The price and delivery conditions will be answered by email.
TRASCO ES 9 GESM (GESM9F3) - Hub (d = 3F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.72€ excl. VAT
12.97€ incl. VAT
TRASCO ES 9 GESM (GESM9F4) - Hub (d = 4F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.72€ excl. VAT
12.97€ incl. VAT
TRASCO ES 9 GESM (GESM9F5) - Hub (d = 5F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.72€ excl. VAT
12.97€ incl. VAT
TRASCO ES 9 GESM (GESM9F6) - Hub (d = 6F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.72€ excl. VAT
12.97€ incl. VAT
TRASCO ES 9 GESM (GESM9F6.35) - Hub (d = 6,35F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.72€ excl. VAT
12.97€ incl. VAT
TRASCO ES 9 GESM (GESM9F6C) - Hub (d = 6F7, with Keyway, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
Price on Request The shaft coupling price is calculated after receiving information about up-to-date prices from our suppliers. Please, fill in your email address and the required number of pieces and submit the form on the product page. The price and delivery conditions will be answered by email.
TRASCO ES 9 GESM (GESM9F8) - Hub (d = 8F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.72€ excl. VAT
12.97€ incl. VAT
TRASCO ES 9 GESM (GESM9F8C) - Hub (d = 8F7, with Keyway, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
Price on Request The shaft coupling price is calculated after receiving information about up-to-date prices from our suppliers. Please, fill in your email address and the required number of pieces and submit the form on the product page. The price and delivery conditions will be answered by email.
TRASCO ES 9 GESM (GESM9F9) - Hub (d = 9F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.72€ excl. VAT
12.97€ incl. VAT
TRASCO ES 9 GESM (GESM9F9C) - Hub (d = 9F7, with Keyway, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
Price on Request The shaft coupling price is calculated after receiving information about up-to-date prices from our suppliers. Please, fill in your email address and the required number of pieces and submit the form on the product page. The price and delivery conditions will be answered by email.
TRASCO ES 12 GESM (GESM12F10) - Hub (d = 10F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
11.22€ excl. VAT
13.58€ incl. VAT
TRASCO ES 12 GESM (GESM12F11) - Hub (d = 11F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
11.22€ excl. VAT
13.58€ incl. VAT
TRASCO ES 12 GESM (GESM12F12) - Hub (d = 12F7, Al Alloy)
Shaft Coupling
At Supplier
Within 3 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
11.22€ excl. VAT
13.58€ incl. VAT
Products are sorted by name in ascending order.
Couplings Construction
- GESM clamping hubs with a clamping joint and tightening screw
- Elastic star-shaped element
Couplings Fields of Use
SIT TRASCO ES zero-backlash elastic couplings with GESM hubs are intended for the highest demands in a wide range of industries where the highest precision and minimum backlash are required.
They are used, for example, in machine tools, testing machines, fine mechanics, dynamometers and many other applications, particularly in the food, chemical, paper, metalworking and automotive industries.
Couplings Characteristics
- Torque transmission without backlash
- Vibration damping from the motor shaft (up to 80%)
- Easy and quick installation
- Couplings are resistant to oil, chemicals and high temperature
- Small size, low moment of inertia
Couplings Code Description
Example:
TRASCO ES 9 GESM - Hub (d = 3F7, Al Alloy)
| Code Part | Description |
|---|---|
| TRASCO ES |
SIT couplings type |
| 9 |
Coupling size designation |
| GESM |
Hub type |
| Hub |
Part name |
| d = 3F7 |
Finished hole diameter in mm and tolerance |
| Al Alloy |
Hub material |
Documents for Download
Related Products
SIT TRASCO ES GESMC Hubs (Compact Clamping)
SIT TRASCO ES GESA Hubs (Shrink)
SIT TRASCO ES GESS Spacers (Double Shaft)
We also provide design and calculation of transmission components, including shaft couplings. In the case of your interest in this service, use the detailed Transmission Drive Design Form.
Shaft Coupling Manufacturer Profile
The group SIT S.p.A develops, engineers, manufactures and distributes high quality solutions and components for power transmission for industrial applications of excellence worldwide, with the aim of increasing the productivity of its customers’ machines and systems. With operations on 3 continents, SIT manufactures pulleys, rubber and polyurethane belts, drive couplings, locking assemblies and a wide range of accessories.
SIT belongs to a large industrial group that dates as far back as 1838. Today, thanks to over 50 years of specific experience in power transmission and a close-knit team of highly qualified professionals, the Group engages in constant technological innovation in order to offer the best application solutions in mechanical power drives.
