SIT TRASCO GRMALU Hubs (Unbored)
GRMALU unbored hubs are parts designed for SIT TRASCO shaft couplings. They are sometimes simply called as the TRASCO GR series basic hubs, or labeled as GR ALU or GRMP ALU.
SIT TRASCO are torsionally flexible, puncture-proof shaft couplings with two metal hubs with front claws and a polyurethane element. They transmit torque through pressure-stressed elastic star-shaped buffer which absorbs shock and torsional vibration. These GRMALU hubs are made of aluminium alloy in short version with a seating or in straight design as unbored. They are therefore supplied as semi-finished products and the bore must be adjusted before mounting the coupling on the shafts.
Products are sorted by name in ascending order.
TRASCO 19/24 GRMALU (GRMALU19/24) - Hub (Type B, 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.
5.57€ excl. VAT
6.73€ incl. VAT
TRASCO 24/32 GRMALU (GRMALU24/32A) - Hub (Type A, 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.
6.50€ excl. VAT
7.87€ incl. VAT
TRASCO 24/32 GRMALU (GRMALU24/32B) - Hub (Type B, 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.
7.36€ excl. VAT
8.90€ incl. VAT
TRASCO 28/38 GRMALU (GRMALU28/38A) - Hub (Type A, 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.
9.13€ excl. VAT
11.05€ incl. VAT
TRASCO 28/38 GRMALU (GRMALU28/38B) - Hub (Type B, 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.
10.82€ excl. VAT
13.10€ incl. VAT
TRASCO 38/45 GRMALU (GRMALU38/45A) - Hub (Type A, 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.
16.86€ excl. VAT
20.40€ incl. VAT
TRASCO 38/45 GRMALU (GRMALU38/45B) - Hub (Type B, 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.
22.00€ excl. VAT
26.62€ incl. VAT
TRASCO 42/55 GRMALU (GRMALU42/55B) - Hub (Type A, 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.
31.76€ excl. VAT
38.43€ incl. VAT
TRASCO 48/60 GRMALU (GRMALU48/60B) - Hub (Type B, 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.
37.40€ excl. VAT
45.25€ incl. VAT
Products are sorted by name in ascending order.
Shaft Coupling Construction
- GRMALU type A (with a seating) unbored hub
- GRMALU type B (straight) unbored hub
- Elastic star-shaped element
Typical Applications
SIT TRASCO elastic couplings with GRMALU hubs are intended for lower performance in a wide range of industries.
They are applied in compressors, pumps and construction machinery. But especially in smaller machines or in drives for conveyor systems and packaging machines in the food, chemical, glass, paper, wood and rubber industries.
Properties
- Small size, compact version
- Polyurethane elastic element allows the compensation of angular, axial and radial transplanting
- Possibility of settlement of length shafts deviations
- Couplings areresistant to oil, chemicals and high temperature
Coupling Code Description
Example:
TRASCO 38/45 GRMALU - Hub (Type B, Unbored, Al Alloy)
| Code Part | Description |
|---|---|
| TRASCO |
SIT couplings type |
| 38/45 |
Coupling size designation |
| GRMALU |
Hub type |
| Hub |
Part name |
| Type B |
Hub design – shape, length if applicable |
| Unbored |
Hub design |
| Al Alloy |
Hub material |
Documents for Download
Related Products
SIT TRASCO GRMP Hubs (Unbored)
SIT TRASCO GRMB Hubs (Taper Bored)
SIT TRASCO GRS 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 Drive or Coupling Calculation Form.
Shaft Coupling Manufacturer Profile
SIT S.p.A. is a company focused on mechanical power transmission (SIT stands for Società Italiana Trasmissioni, meaning Italian Power Transmission Company). Under the SIT brand, it develops, engineers, manufactures, and distributes high-quality solutions and components for industrial applications across a wide range of sectors – from automotive and precision engineering to the food and textile industries, as well as chemical plants and logistics centers.
Together with Elatech S.r.l. and other companies, SIT S.p.A. is part of the Scaglia Group. The Group operates in Europe, North America, and Asia, and comprises 7 manufacturing facilities and 6 subsidiaries with more than 1,000 employees. As part of the Group, the individual companies benefit from shared technologies and innovations, providing financial stability and sustainable growth.
We are an authorized distributor of shaft couplings, bushes, sprockets, and pulleys from SIT S.p.A., as well as polyurethane timing belts and conveyor belts from Elatech S.r.l.