For wheel loads up to 40 tonnes

DRS and DRS-M wheel block systems

DRS and DRS-M wheel block systems: Modular system for tailor-made solutions

Our DRS wheel block system is a versatile travel wheel system for heavy-load handling applications. With the DRS-M, we have enhanced this system further and added new features to it. Both product ranges can be seamlessly integrated into Demag modular drive systems: Eight finely graded sizes provide the right wheel block for every application:

DRS-M 112 to 200 (load capacity from 2.75 to 10 t)
DRS 250 to 500 (load capacity from 16 to 40 t)

And the large selection of travel wheels and special wheel designs make it possible to adapt them to almost any travel rail or operating conditions. Cost-effective and ready to install. Further strengths:

High performance range and maximum load capacity
Many travel wheel shapes available as standard as well as customer-specific designs
Four variants for connection to the customer’s superstructure
High-quality housing with optimum protection for the travel wheels and bearings
High rigidity
Direct connection of optional accessories
Laser alignment system for wheel blocks on multiple travel units

DRS-M wheel blocks also come with additional features:

Fixed alignment

The innovative installation connection enables wheel blocks to be replaced quickly without the need for time-consuming readjustment. This patented fixed alignment element can be attached to the steelwork and ensures that the wheel block remains precisely positioned even after it is replaced.

Mechanical wear measurement

Wheels need to be checked regularly. Besides its flange wear indicator, DRS-M also makes it easy to inspect the travel wheel tread. This patented mechanical wear indicator can be used to check the current state of wear on the wheel – at standstill and regardless of the wheel position. The result can be easily read on a colour scale.

Your Contact

Demag Cranes & Components GmbH

Postfach 67
58286 Wetter
Germany

Phone:

+49 (0) 2335 92-0

Fax:

+49 (0) 2335 92-7676

Email:

[email protected]

Contact

Product information

The benefits at a glance

Exact configuration

Eight sizes with load capacities from 2.75 to 40 tonnes per wheel
Wheels in various shapes and designs – made of spheroidal-graphite cast iron (GGG 70), polyamide, or with Hydropur tyres

A: Guided on both sides by flanges for rail systems

B: Wheels without any flanges, optionally fitted with lateral guide rollers, also with concave shape or contour to customer specifications

D: Wheels guided by a flange on one side for units running at floor level

E: Larger diameter wheels without a flange for increased ground clearance

S: Wheels in V, trapezoidal, or concave shape for guided applications

F: Flangeless travel wheels with Hydropur tyres for high acceleration & quiet running characteristics

C: Flangeless, concave polyamide wheels for quiet operation that is kind to the runway

Many connection options

Prepared mounting surfaces for virtually any connection: from top and end connection arrangements with bolted and welded connection elements, to side and pin connection arrangements

K: Top connection

B: Pin connection

S: End connection

W: Side connection

Custom solutions

Complete travel units with precisely matching geared motors from the Demag modular drive system
High rigidity thanks to special stiffeners
High ground clearance for wheel blocks thanks to compact system design – also for complete drive units with gearboxes designed to match the wheel load
Horizontal guide roller arrangements and buffers in various sizes and designs (optional)

Easy to install

Housings ready for direct connection to superstructures
Easy connection to superstructures thanks to tight housing design and position tolerances and high dimensional accuracy in all planes
Laser alignment system for simple and precise alignment of wheel blocks (DRS)
Patented fixed alignment (DRS-M)
Simple wheel replacement without the need for re-alignment of top connection thanks to patented asymmetrical housing
Wheel blocks can also be moved and aligned laterally after they have been installed in hollow sections and beams (for top, end and pin connection arrangements)

Minimum maintenance

Cast housing enclosed on five sides reliably protects the travel wheels against any mechanical influence
Generously dimensioned grooved ball bearings which are lubricated for life, tapered roller bearings from size DRS 250
Travel wheels made of self-lubricating spheroidal-graphite cast iron (GGG 70) for low friction and high resistance to wear
Integrated wear indicator on wheels with flanges for remote visual diagnosis
Optional travel wheel wear indicator based on colour scale (DRS-M)

Optimal design support

Optimum support for project engineering and design work – e.g. with CAD files in various formats – thanks to our web-based planning tool www.drives.demag-designer.com

Technical data

Dimensions (DRS with spheroidal-graphite cast iron travel wheel with two flanges)

Size	Max. load capacity	Travel wheel dia.	Weight	Dimensions [mm]
	[t]	[mm]	[kg]	a1	b1	b2	c1	h1
DRS-M 112	2.75	112	7.3	190	47	80	96	131
DRS-M 125	5	125	9.9	220	60	80	98	147.5
DRS-M 160	7	160	18.3	275	65	89	110	187
DRS-M 200	10	200	35.7	340	65	101	130	238
DRS 250	16	250	62	385	75	110	150	281
DRS 315	22	315	117	470	90	130	180	349.5
DRS 400	30	400	201	580	110	155	210	440
DRS 500	40	500	352	700	110	170	240	566