Following the successful market launch of the shaft mount gear units in the block housing design and its great popularity with customers, the agitator design is now being added to the range for sizes A56, A66 and A76. The connection dimensions are the same as for the parallel shaft geared motors of the same size and are intended to replace these units based on the guaranteed interchange ability.
At the same time, the single-stage helical gear units in sizes 40 and 50 have been completely revised.

Shaft mounted gear units in agitator design:
From the last quarter of 2008, shaft mount gear units in sizes 56, 66 and 76 (see Figure 1) will be available in the agitator design. These gear units have the same connection dimensions and technical data (permissible lateral forces, output torque, thermal power limit, etc.) as the parallel shaft geared motors of the same size which are being replaced.

Fig. 1 - Shaft mounted gear units AR. 56. - AR. 76.

Correlations between the AR. shaft mounted gear units and FR. parallel shaft geared motors
(see Table 1).

Table 1 – AR. – FR. comparison table

􀀀aR … output flange
bR … output flange pilot diameter
eR … output flange pitch circle diameter

Approved features such as
• 3-level shaft seals
• Reinforced tapered roller bearing
• Output flange
• Oil leckage indicator
have been carried over from the parallel shaft gear units to the agitator design.
This makes these gear units especially well-suited for applications where high radial forces occur, such as in environmental technology with surface aerators or
agitators.

All technical data can be found in the MAS07 catalogue, as well as the dimensional drawings in the forthcoming cat4cad - version 4.0.

H. 41E and H. 51E single-stage gear units:
The single-stage gear units in sizes H. 40E and H. 50E have been completely revised in line with the H. 110E model (see Figure 2).

The following modifications have been implemented:
1. Housing material is grey cast iron EN-GJL-200 instead of aluminium
2. Feet cast onto the housing (screw-on foot plate not required)
3. No hollow shaft possible
4. No support nose
5. Designation H. 41E instead of H. 40E; H. 51E instead of H. 50E

Fig. 2 - Single-stage gear units H. 41E and H. 51E

The technical data remains unchanged and can be found in the MAS07 catalogue.

Connection dimensions:
The following connection dimensions have changed from MAS07 catalogue (sizes H. 40E, H. 50E):
• Center height hG
• Distance from 1st shaft shoulder hole iG
• Mounting hole distance aG

The foot connection dimensions of sizes HG 41E and HG 51E are ident.
According to the UNIBLOCK design, and as a result these gear units have their foot and flange in one housing.

The changeover will take place in the final quarter of 2008.

For more information on the Watt product range, please visit our website at www.wattdrive.com .

Courtesy of Watt Eurodrive