Vesconite Hilube

Vesconite Hilube is our flagship thermopolymer, designed for particularly difficult operating environments. Hilube is specifically recommended for moist and underwater applications. These include the pump and marine industry, where regular maintenance is not practically feasible or cost-effective. Displaying superior wear life, especially in poorly lubricated and dirty conditions, Vesconite Hilube has been shown to offer up to ten times the life of bronze bushings.

Vesconite Hilube incorporates an internal lubricant that translates into an exceptionally low friction coefficient. Combined with excellent dimensional stability, low wear rates and a high load-bearing capacity. Hilube has a PV rating (pressure x velocity) four times that of nylon bushings.

Vesconite is available in a wide range of rods, bushings, plates, and machined custom parts.

Key Features
Stock Range
Technical Specs

KEY FEATURES

No water swell

Fully saturated, Vesconite Hilube has a negligible moisture absorption rate (0.5%). Its linear swell rate of 0.07% allows for fine clearances in the majority of applications. By way of contrast, nylons absorb moisture by as much as 9% of total mass – resulting in high swell rates and critical loss of clearance, which can lead to seizures.

Superior performance

Vesconite Hilube overcomes the limitations of conventional bearing materials.  Its load-bearing capacity is higher than white metal, its wear life in poorly lubricated or dirty conditions more than ten-fold that of bronze. Its self- lubricating properties are far superior to nylon, and unlike nylon-based materials, Vesconite Hilube does not swell in water or humid conditions.

Extended wear life

Vesconite grew out of an identified industry need to reduce maintenance and downtime across a multitude of applications. The resultant product was a huge improvement on conventional nylon, bronze and white metal. Vesconite Hilube takes this a technological step further, offering up to five times the wear life of Vesconite in many applications and superior performance under water.

Low friction

Vesconite Hilube’s friction coefficient (0.10) is approximately half that of bronze and nylon. This allows for a higher PV factor (load x speed). Adding external lubrication or water to the equation will lower friction even further, and the resultant PV factor.

High load-bearing strength

Vesconite Hilube has a much higher load capacity compared to nylon, rubber and elastomer bearings. Unlike nylon, Vesconite Hilube maintains its strength under wet conditions and shows very little creep under heavy load. It has proved particularly superior in higher load applications.

Dimensional stability

An issue common to most synthetic bearing materials, Vesconite Hilube’s coefficient of thermal expansion is comparatively low – approximately one third less than nylon and Acetal. but four times that of bronze. As such, Vesconite Hilube requires slightly more clearance when replacing metal parts. No allowance is required for moisture changes – an important benefit, as the most common reason for polymer bearing failure is thermal expansion and water swell.

Temperature limits

Vesconite Hilube may be used continuously at 100ºC  (212ºF) in dry applications, and for short periods at higher temperatures. Load limits should be reduced by half when operating above 80ºC (176ºF).      

Shaft friendly

The wear of metal pins and shafts is reduced by as much as 90% when Vesconite Hilube bushings are used. An extremely valuable benefit in terms of cost-saving and maintenance downtime.

Chemical resistance

Vesconite Hilube is resistant to dilute and moderate acids, organic solvents, oils and petroleum. It has limited resistance to strong acids and alkalis.

Bushings
Sizes (mm) are nominal, actual sizes are slightly oversize
Plates
Sizes (mm) are nominal, actual sizes are slightly oversize
Rods
Sizes (mm) are nominal, actual sizes are slightly oversize
15 x 7 x 1000 20 x 10 x 1000 25 x 15 x 1000 30 x 20 x 1000
35 x 20 x 1000 35 x 25 x 1000 35 x 30 x 1000 40 x 20 x 1000
40 x 25 x 1000 40 x 30 x 1000 45 x 25 x 1000 45 x 35 x 1000
50 x 20 x 1000 50 x 25 x 1000 50 x 30 x 1000 50 x 35 x 1000
50 x 40 x 1000 55 x 35 x 1000 55 x 40 x 1000 60 x 35 x 1000
60 x 40 x 1000 60 x 45 x 1000 60 x 50 x 1000 65 x 25 x 1000
65 x 35 x 1000 65 x 45 x 1000 65 x 50 x 1000 70 x 25 x 1000
70 x 35 x 1000 70 x 50 x 1000 75 x 50 x 1000 75 x 60 x 1000
80 x 35 x 1000 80 x 50 x 1000 80 x 60 x 1000 80 x 70 x 1000
90 x 35 x 1000 90 x 50 x 1000 90 x 70 x 1000 90 x 80 x 1000
100 x 35 x 1000 100 x 60 x 1000 100 x 75 x 1000 110 x 70 x 1000
110 x 90 x 1000 110 x 100 x 1000 120 x 60 x 1000 120 x 75 x 1000
120 x 90 x 1000 120 x 100 x 1000 130 x 70 x 1000 130 x 85 x 1000
130 x 100 x 1000 140 x 100 x 1000 155 x 75 x 1000 155 x 100 x 1000
155 x 125 x 1000 160 x 140 x 1000 165 x 125 x 1000 (F) 170 x 125 x 1000
180 x 100 x 1000 180 x 140 x 1000 180 x 160 x 1000 205 x 150 x 1000
205 x 170 x 1000 220 x 190 x 1000 225 x 160 x 1000 225 x 170 x 1000
225 x 190 x 1000 250 x 190 x 1000 250 x 215 x 1000 260 x 170 x 1000
260 x 215 x 1000 260 x 225 x 1000 275 x 190 x 1000 275 x 215 x 1000
300 x 200 x 1000 300 x 250 x 1000 300 x 275 x 1000 325 x 215 x 1000
325 x 275 x 1000 350 x 250 x 1000 350 x 300 x 1000 375 x 325 x 1000
420 x 350 x 1000 420 x 375 x 1000 460 x 350 x 1000 460 x 400 x 1000
480 x 375 x 1000 525 x 425 x 1000 575 x 450 x 1000 587 x 457 x 1000
600 x 450 x 1000
2 x 200 x 1000 3 x 200 x 1000 5 x 200 x 1000 6 x 200 x 1000
8 x 200 x 1000 10 x 200 x 1000 12 x 200 x 1000 15 x 200 x 1000
16 x 200 x 1000 20 x 200 x 1000 25 x 200 x 1000 30 x 200 x 1000
35 x 200 x 1000 40 x 200 x 1000 50 x 200 x 1000 75 x 200 x 1000
3 x 400 x 500 5 x 400 x 500 8 x 400 x 500 10 x 600 x 1000
16 x 600 x 1000 20 x 600 x 1000 25 x 600 x 1000 40 x 600 x 1000
8 x 1000 10 x 1000 12 x 1000 16 x 1000
18 x 1000 20 x 1000 25 x 1000 27 x 1000
30 x 1000 35 x 1000 40 x 1000 45 x 1000
50 x 1000 55 x 1000 60 x 1000 65 x 1000
70 x 1000 75 x 1000 80 x 1000 90 x 1000
100 x 1000 110 x 1000 115 x 1000 125 x 1000
135 x 1000 150 x 1000 160 x 1000
Technical Specifications for Vesconite Metric Imperial
Friction coefficient (unlubricated on steel) 0.12 - 0.20 0.12 - 0.20
Compressive yield strength 89 MPa 12,750 psi
Design load (static, oscillating or occasional 30 MPa 4,250 psi
Linear expansion at 65% relative humidity 0.04% 0.04%
Linear expansion - saturated 0.07% 0.07%
Maximum operating temperature guide
Dry 100° - 120°C 210° - 250°F
Wet 60° - 70°C 140° - 160°F
Thermal coefficient of expansion 6 x 10 - 5 mm/°C 3.3 x 10 - 5 in/in/°F
Density / specific gravity 1.38 g/ml 1.38
Modulus of elasticity 2.2 GPa 500 000 psi
Poisson’s ratio (oriented) 0.37-0.44 0.37-0.44
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