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SIT TRASCO ES GESP Hubs (Unbored)

GESP unbored hubs are parts designed for SIT TRASCO ES zero-backlash shaft couplings. They are sometimes simply called as basic GES series hubs, or labeled as GES P.

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 GESP hubs are made of steel or aluminium alloy as unbored. They are therefore supplied as semi-finished products and the bore must be adjusted before mounting the coupling on the shafts.

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Products are sorted by name in ascending order.

TRASCO ES 7 GESP (GESP7) - Hub (Unbored, Al Alloy) Shaft Coupling

TRASCO ES 7 GESP (GESP7) - Hub (Unbored, 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.

4.79 excl. VAT

5.79 incl. VAT

TRASCO ES 9 GESP (GESP9) - Hub (Unbored, Al Alloy) Shaft Coupling

TRASCO ES 9 GESP (GESP9) - Hub (Unbored, 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.

4.82 excl. VAT

5.84 incl. VAT

TRASCO ES 12 GESP (GESP12) - Hub (Unbored, Al Alloy) Shaft Coupling

TRASCO ES 12 GESP (GESP12) - Hub (Unbored, Al Alloy)

Shaft Coupling

In Stock We update the stock availability information every 2 hours.

The goods we have in stock are usually ready for shipping or personal collection no later than the next working day. In case of personal collection, please do not come to pick the goods up before we contact you that the goods are ready.

5.30 excl. VAT

6.42 incl. VAT

TRASCO ES 14 GESP (GESP14) - Hub (Unbored, Al Alloy) Shaft Coupling

TRASCO ES 14 GESP (GESP14) - Hub (Unbored, 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.

5.51 excl. VAT

6.67 incl. VAT

TRASCO ES 19/24 GESP (GESP19/24) - Hub (Unbored, Al Alloy) Shaft Coupling

TRASCO ES 19/24 GESP (GESP19/24) - Hub (Unbored, 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.

10.74 excl. VAT

13.00 incl. VAT

TRASCO ES 24/28 GESP (GESP24/28) - Hub (Unbored, Al Alloy) Shaft Coupling

TRASCO ES 24/28 GESP (GESP24/28) - Hub (Unbored, Al Alloy)

Shaft Coupling

In Stock We update the stock availability information every 2 hours.

The goods we have in stock are usually ready for shipping or personal collection no later than the next working day. In case of personal collection, please do not come to pick the goods up before we contact you that the goods are ready.

14.24 excl. VAT

17.23 incl. VAT

TRASCO ES 28/38 GESP (GESP28/38) - Hub (Unbored, Al Alloy) Shaft Coupling

TRASCO ES 28/38 GESP (GESP28/38) - Hub (Unbored, 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.

20.56 excl. VAT

24.88 incl. VAT

TRASCO ES 38/45 GESP (GESP38/45) - Hub (Unbored, Al Alloy) Shaft Coupling

TRASCO ES 38/45 GESP (GESP38/45) - Hub (Unbored, 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.

40.16 excl. VAT

48.60 incl. VAT

TRASCO ES 42 GESP (GESP42) - Hub (Unbored, Steel) Shaft Coupling

TRASCO ES 42 GESP (GESP42) - Hub (Unbored, Steel)

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.

66.82 excl. VAT

80.85 incl. VAT

TRASCO ES 48 GESP (GESP48) - Hub (Unbored, Steel) Shaft Coupling

TRASCO ES 48 GESP (GESP48) - Hub (Unbored, Steel)

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.

75.90 excl. VAT

91.84 incl. VAT

TRASCO ES 55 GESP (GESP55) - Hub (Unbored, Steel) Shaft Coupling

TRASCO ES 55 GESP (GESP55) - Hub (Unbored, Steel)

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.

86.59 excl. VAT

104.77 incl. VAT

TRASCO ES 65 GESP (GESP65) - Hub (Unbored, Steel) Shaft Coupling

TRASCO ES 65 GESP (GESP65) - Hub (Unbored, Steel)

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.

113.80 excl. VAT

137.69 incl. VAT

TRASCO ES 75 GESP (GESP75) - Hub (Unbored, Steel) Shaft Coupling

TRASCO ES 75 GESP (GESP75) - Hub (Unbored, Steel)

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.

233.80 excl. VAT

282.89 incl. VAT

Products are sorted by name in ascending order.


Couplings Construction

SIT TRASCO ES Coupling Construction with GESP Hubs

  1. GESP unbored hubs
  2. Elastic star-shaped element

Couplings Fields of Use

SIT TRASCO ES zero-backlash elastic couplings with GESP 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 GESP - Hub (Unbored, Al Alloy)

Code Part Description
TRASCO ES

SIT couplings type

9

Coupling size designation

GESP

Hub type

Hub

Part name

Unbored

Hub design

Al Alloy

Hub material

Documents for Download

TRASCO ES Zero Backlash Couplings - Preview

TRASCO ES Zero Backlash Couplings

SIT Catalogue

English (PDF 1.41 MB)


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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

logo SIT

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.

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