drawings tailored to your needs.
1.2 Travel wheel materials
40Cr
DRS112~DRS200 utilize 40Cr hot-rolled round steel, expertly quenched
and tempered for superior performance.
DRS250~DRS500 employ 40Cr forgings, also undergoing tempering treatment.
The material is renowned for its high tensile strength, featuring comprehensive quenching and
surface quenching treatment rated at HB300-380. The walking wheel serves a
guiding role. When wheel flange guidance is implemented, it ensures the minimum
The precision engineering of our wheel design allows for a remarkable gap between the inner surface of the wheel flange and the edge of
the track that can be as minuscule as 1mm, showcasing outstanding attention to detail. This same gap can also be
achieved by meticulously arranging guide wheels. In the event of anticipated
wear increase, the tread of the walking wheel or the rim of the guide wheel can be
hardened to an impressive HRC56 ± 2 (HB530), ensuring no slipping occurs. The hardening of
the walking wheel is specifically aimed at significantly reducing wear.
polyurethane
Polyurethane, a remarkable synthetic rubber material, offers superior
resistance characteristics compared to other synthetic rubbers, making it a preferred choice.
In comparison with metal materials, polyurethane walking wheels boast
a notably high coefficient of friction, rendering them ideal for
applications requiring high dynamic response. Their excellent shock
absorption characteristics ensure that walking noise is minimized to a great extent.
However, it's important to note that compared to metal walking wheels, the
load-bearing capacity of polyurethane walking wheels is significantly weakened.
Thanks to the low ground contact pressure, walking
wheels crafted from polyurethane material are exceptionally suitable for
use on concrete surfaces. Moreover, due to the high coefficient of friction
between the walking wheel tread and the contact material,
polyurethane walking wheels are also splendidly suitable for friction-driven
applications, achieving acceleration up to 1.5m/s2. Additionally,
polyurethane materials are adept for usage in temperatures reaching up to
a robust 100 degrees Celsius.
Hardening of wheels
In situations where running wheels experience severe wear during operation (evident by
the presence of substantial iron filings along the track edge),
the tread and rim of the metal running wheels can undergo hardening (to
a depth of 2-3mm). The running wheels of models DRS112~DRS200
are designed to avoid rim damage markings. The hardness value admirably reaches
HRC56 ± 2 (HB530), exemplifying our commitment to durability.4
Overview
1.3 Box materials
Materials
For models DRS112~DRS200,
high-strength aluminum alloy casting is utilized,
while for DRS250~DRS500,
nodular cast iron QT500 is employed,ensuring robust construction.
Paint
For models DRS112~DRS200,
the aluminium wheel block housings are outfitted with a
weather-resistant powder coating in the elegant RAL7001 (silver grey), with a
minimum thickness of 90μm, ensuring long-lasting protection before leaving the factory.
For models DRS250~DRS500,
a primer coat of silver grey paint is applied, with an approximate thickness of
40μm, followed by a finish coat of silver grey RAL7001 with 50% shine, approximately 50μm thick.
Special paint
For models DRS112~DRS200,
When a bespoke shade is desired, diverging from the standard RAL7001 silver grey hue, our wheel block undergoes a meticulous powder-coating process to achieve the exact color you envision.
Our powder-coated wheel block can be adorned with your chosen non-standard color, ensuring it perfectly matches your design aesthetics.
DRS250~DRS500
The housing of the wheel block offers the flexibility of being painted in a non-standard color, making customization effortless.
Standard RAL7001, silver grey, remains the default; however, bespoke color requests can be accommodated seamlessly.
For enhanced durability, an acid-resistant paint is applied, providing robust protection against corrosive elements.
With a finish tailored for resilience, the outer surfaces are optimally shielded.
DRS112~DRS200
Designed for challenging environments, our powder-coated wheel blocks are suitable for use in areas with acid vapors without necessitating additional treatment.
The powder-coated wheel block surfaces are adeptly crafted to withstand environments rich in acid vapors, requiring no extra treatment.
A meticulous seal between the housing components and cover, achieved with an acid-proof varnish, ensures maximum protection.
For uncompromised safety and performance, wheel blocks are equipped with ball bearings boasting double lip seals, preventing ingress of contaminants.
Our ball bearings, featuring double lip seals, deliver superior protection, enhancing the wheel block's durability and performance.
DRS250~DRS500
For applications subject to acid vapors, our wheel blocks can be expertly finished with a protective acid-resistant paint, ensuring longevity.
Engineered for environments with corrosive vapors, wheel blocks with an acid protection finish offer unparalleled resilience.5
Overview
·Flange guide arrangement
To maintain optimal performance, the horizontal force on flange-guided wheel blocks should not surpass 20% of the wheel's actual load.
Adhering to the 20% limit of the actual wheel load ensures the integrity and efficiency of flange-guided wheel blocks.
·Wheel blocks with roller guide arrangement
The horizontal force applied to wheel blocks equipped with a roller guide arrangement should be capped at 15% of the actual wheel load, safeguarding performance.
For models DRS112~DRS200, with travel wheel variant E, a stricter limit of 12% is advised to preserve functionality and durability.
The DRS200 model, when featuring a top connection, necessitates a horizontal force limit of 10% to ensure operational stability.
Exceptionally, for the DRS200 with a top connection, a 10% limit on horizontal load is crucial. For higher loads, consider fitting the roller guide arrangement to the steel superstructure instead.
When anticipating greater horizontal loads, the roller guide arrangement may be strategically fitted to the steel superstructure to prevent undue strain on the wheel block.
Ensure the roller guide arrangement is affixed appropriately to the steel superstructure to manage higher horizontal forces effectively.
·
Flange guide arrangement Wheel blocks with roller guide arrangement, fitted tothe customer's superstructure
The guide roller arrangement, when utilized independently, can transmit up to 20% of the allowable wheel load, provided it's mounted on the customer's superstructure.
By installing the guide roller arrangement to the customer's framework, up to 20% of the allowable wheel load can be effectively transmitted.
When integrated onto the customer's superstructure, the guide roller arrangement can manage 20% of the permissible wheel load.
DRS
DRS112 |
DRS125 |
DRS160 |
DRS200 |
DRS250 |
DRS250 |
|