Genuine WIRTGEN
track pad systems


Track pads are among the most important components of crawler units.

The term track pad include the base plate and the actual pad. The term base plate describes the steel plate that is connected to the track chain. The pads – polyurethane plates – are bolted to the base plates and ensure the necessary traction. The choice of track pads with respect to size and composition is primarily determined by the weight of the machine and the customer’s preferences.

Genuine WIRTGEN track pads are easy to recognise on account of their distinctive yellow and red colour combination.

The choice is yours!

WIRTGEN offers different base plate types to enable you, as our customer, to choose your preferred bolting method.
Regardless of your choice, all WIRTGEN track pads provide reliable traction on a wide variety of surfaces and also prevent possible damage to the asphalt pavement. You can never go wrong with genuine track pads from WIRTGEN.

Poly Grip track pads

Genuine WIRTGEN Poly Grip track pads consist of a tempered steel base plate manufactured from boron steel with a pad made from a polyurethane compound cast on top. The latter material was chosen due to the outstanding traction it provides on a wide variety of surfaces. Poly Grip track pads are mounted by direct attachment to the individual track chain links by means of nuts and bolts. The track pads impressively demonstrate their resistance to wear when, for example, machines are driven over sharp edges such as kerb stones or milled edges.

  • A special polyurethane compound assures their particular resilience. This guarantees them a long service life, even under high localised stresses.
  • A high polyurethane content ensures the extremely long life
  • of the track pads and their high resistance to wear and tear. The angled treads of the track pads deliver particularly convincing performance when driving over kerbs or milled edges.
  • Tempered steel plates made from special boron steel guarantee high flexural strength.
  • Tight and reliable bolt fit is achieved by high-strength track pad bolts with a fine-pitch thread.
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The logical further development of the genuine WIRTGEN track pad product family is the
Easy Pad System (EPS PLUS):

  • As the pad is simply bolted to the base plate, it can be changed without having to remove the base plate from the track chain.
  • 20% more wear volume compared to Poly Grip track pads ensures a longer service life.
  • The optimised tread design provides protection for kerb edges and excellent running characteristics.
  • A specially formulated polyurethane compound ensures extremely high tensile strength.
  • A strong connection is assured by the metal-to-metal contact of the threaded steel inserts and the steel plates.
  • Both variants enable convenient and uncomplicated mounting. Whether customers choose EPS PLUS track pads with or without stud bolts is entirely their decision.
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EPS PLUS track pads in two mounting variants
EPS PLUS:

Mounting with the aid of a fine-pitch thread and a micro-encapsulated thread locker

EPS PLUS bolt on:

Mounting by screwing the nuts onto the stud bolts permanently attached to the pads

Replacement of track pads

As with all other nut and bolt connections, the track pad bolts/nuts must also be tightened with sufficiently high torque in the case of both the Poly Grip track pads and theEPS PLUS base plates from WIRTGEN. The following tables provide the correct tightening torque values for various WIRTGEN machines.

Machine model Thread (mm) Tightening torque
Ma (Nm) Ma (ft-lb)
Bolts for Poly Grip track pads and
EPS PLUS base plates from WIRTGEN
W 1000 F, W 1200 F, W 1300 F, W 100 F(i), W 120 F(i),
W 130 F(i), W 100 CF(i),
W 120 CF(i), W 130 CF(i), W 150(i), W 150 CF(i), W 1500,
W 1900, W 195, W 200(F)(i),
W 200 H(i) 		M 12 x 1 160 +/- 10 118 +/- 7
W 2000, W 205, W 215,
W 210(F)(i), W 210 XP 		1/2“ UNF 180 +/- 10 133 +/- 7
W 2100, W 220(F)(i) 9/16“ UNF 260 +/- 15 192 +/- 15
W 2200, W 250(F)(i) 5/8“ UNF 370 +/- 20 273 +/- 15

The use of EPS PLUS track pads on WIRTGEN machines enormously simplifies the work usually involved in fitting pads. Poly Grip track pads no longer have holes in which dirt can collect around the bolts, which previously made mounting a much more difficult task.

The most significant difference between the two systems (Poly Grip vs. EPS PLUS) is that, in the case of EPS PLUS, the steel base plates can remain on the track chain when worn track pads are removed. The steel base plates are attached in the same way as the Poly Grip track pads. Only the worn EPS PLUS polyurethane pad needs to be removed and replaced by a new one. When mounting WIRTGEN EPS PLUS track pads on their base plates, strict attention must also be paid to ensuring that the bolts are tightened with the prescribed torque in order to assure a secure connection between the pad and the steel base plate. The required tightening torque for the respective machines and crawler unit sizes can be found in the following table. Please also compare them with the latest values provided in the instruction manual. An adhesive locking compound on the special bolts prevents the pads working loose after tightening.

Please note: The bolts must be immediately tightened with the appropriate torque before the adhesive coating on the bolt thread hardens.

Machine model Crawler size Thread size
(mm) 		Tightening torque
Ma (Nm) Ma (ft-lb)
Bolts for EPS PLUS pads from WIRTGEN
W 1000 F, W 1200 F,
W 1300 F, W 100 F(i),
W 120 F(i), W 130 F(i),
W 100 CF(i), W 120 CF(i), W 130 CF(i), W 150(i),
W 150 CF(i), W 1500,
W 1900, W 195, W 200(i), W 200 H(i) 		W1 M 12 x 1.5 150 110
W 2000, W 205, W 215, W 210(i) W 210 XP W3
W 2100, W 220(i) W4 M 14 x 1.5 240 177
W 2200, W 250(i) W5
Wear on track pads

Polyurethane track pads must be replaced when the wear limit of the pad is reached. Replacement should be carried out before the bars of the steel base plate become visible. The coefficients of friction (traction) of steel on asphalt are significantly worse than those of polyurethane or rubber. This has a direct influence on the possible advance speed and, consequently, on machine productivity. At the same time these coatings minimise damage to the ground and prevent possible payment of damages to the customer by service providers or owners of the construction machines. After all, roads or ground that were in good condition but were damaged due to worn track pads must, in general, be repaired or remade. If the steel bars of track pad become visible at the side, there is no reason to replace it.

The coating of the steel base plates (in the case of EPS PLUS track pads, the projection of the wider pads) serves to protect kerbs and other carriageway boundaries which could be damaged by contact with the steel of the base plate. The side layers of polyurethane pads may get torn when rolling over sharp edges or other obstacles, but this has no negative effects on the secure bond between the polyurethane and the steel base plate.

Chipping on the side of a Poly Grip track pad

Worn track pads: will probably cause damage to asphalt layers

Machine model Crawler size Wear dimension A (mm)
0 % 20 % 40 % 60 % 80 % 100 %
WIRTGEN EPS PLUS track pads and WIRTGEN EPS PLUS track pads with stud bolts

W 1000 F, W 1200 F, W 1300 F, W 100 F(i), W 120 F(i), W 130 F(i), W 120 FTi, W 100 CF(i), W 120 CF(i), W 130 CF(i),
W 100 XFi, W 120 XFi, W 130 XFi, W 120 XTi, W 150(i), W 150 CF(i), W 150 XFi, W 1500, W 1900, W 195, W 200(i), W 200 H(i), W 200 F(i) 		W1 57 51 45 39 33 27
W 2000, W 205,
W 215, W 210(i),
W210 Fi, W 210 XP,
W 207 Fi 		W3 57 51 45 39 33 27
W 2100, W 220(i),
W 220 Fi 		W4 72.5 64.9 57.3 49.7 42.1 34.5
W 2200, 2200 CR, W 250(i), W 240 CR(i), W 380 CR(i) W5 75.7 68.2 60.6 53.1 45.5 38
WIRTGEN Poly Grip track pads
W 1000 F, W 1200 F, W 1300 F, W 100 F(i), W 120 F(i), W 130 F(i), W 120 FTi, W 100 CF(i), W 120 CF(i), W 130 CF(i), W 100 XFi, W 120 XFi, W 130 XFi, W 120 XTi, W 150(i), W 150 CF(i), W 150 XFi, W 1500, W 1900, W 195, W 200(i), W 200 H(i), W 200 F(i) W1 52 47 42 37 32 27
W 2000, W 205,
W 215, W 210(i), W210 Fi, W 210 XP, W 207 Fi 		W3 52 47 42 37 32 27
W 2100, W 220(i), W 220 Fi W4 70 62.9 55.8 48.7 41.6 34.5
W 2200, 2200 CR, W 250(i), W 240 CR(i), W 380 CR(i) W5 72 65.2 58.4 51.6 44.8 38

EPS PLUS track pad (simplified illustration)

Poly Grip track pad (simplified illustration)

EPS PLUS track pad with stud bolts (simplified illustration)

WEAR CALCULATION BASED ON THE EXAMPLE OF A WIRTGEN TRACK PAD

The wear height of the pad amounts to around 40 % after 750 hours in operation. These values enable the calculation of the probable service life of the track pad under invariable wear conditions.

(750 hours / 40 %) * 100 % = 1,875 hours.

The calculated service life of this pad until replacement is due is 1,875 hours.

According to this calculation, the remaining service life of this pad amounts to 1,125 hours. Please note: The calculated operating hours are only an estimate, the wear dimension should nevertheless be checked at regular intervals.

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