Vesconite Hilube

Vesconite Hilube is our flagship bearing material, designed for particularly difficult operating environments. Vesconite 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. Vesconite 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 (0.08 – 0.12) 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 1,000 20 x 10 x 1,000 25 x 15 x 1,000 30 x 20 x 1,000
35 x 20 x 1,000 35 x 25 x 1,000 35 x 30 x 1,000 40 x 20 x 1,000
40 x 25 x 1,000 40 x 30 x 1,000 45 x 25 x 1,000 45 x 35 x 1,000
50 x 20 x 1,000 50 x 25 x 1,000 50 x 30 x 1,000 50 x 35 x 1,000
50 x 40 x 1,000 55 x 35 x 1,000 55 x 40 x 1,000 60 x 35 x 1,000
60 x 40 x 1,000 60 x 45 x 1,000 60 x 50 x 1,000 65 x 25 x 1,000
65 x 35 x 1,000 65 x 45 x 1,000 65 x 50 x 1,000 70 x 25 x 1,000
70 x 35 x 1,000 70 x 50 x 1,000 75 x 50 x 1,000 75 x 60 x 1,000
80 x 35 x 1,000 80 x 50 x 1,000 80 x 60 x 1,000 80 x 70 x 1,000
90 x 35 x 1,000 90 x 50 x 1,000 90 x 70 x 1,000 90 x 80 x 1,000
100 x 35 x 1,000 100 x 60 x 1,000 100 x 75 x 1,000 110 x 70 x 1,000
110 x 90 x 1,000 110 x 100 x 1,000 120 x 60 x 1,000 120 x 75 x 1,000
120 x 90 x 1,000 120 x 100 x 1,000 130 x 70 x 1,000 130 x 85 x 1,000
130 x 100 x 1,000 140 x 100 x 1,000 155 x 75 x 1,000 155 x 100 x 1,000
155 x 125 x 1,000 160 x 140 x 1,000 165 x 125 x 1,000 170 x 125 x 1,000
180 x 100 x 1,000 180 x 140 x 1,000 180 x 160 x 1,000 205 x 150 x 1,000
205 x 170 x 1,000 220 x 190 x 1,000 225 x 160 x 1,000 225 x 170 x 1,000
225 x 190 x 1,000 250 x 190 x 1,000 250 x 215 x 1,000 260 x 170 x 1,000
260 x 215 x 1,000 260 x 225 x 1,000 275 x 190 x 1,000 275 x 215 x 1,000
300 x 200 x 1,000 300 x 250 x 1,000 300 x 275 x 1,000 325 x 215 x 1,000
325 x 275 x 1,000 350 x 250 x 1,000 350 x 300 x 1,000 375 x 325 x 1,000
420 x 350 x 1,000 420 x 375 x 1,000 460 x 350 x 1,000 460 x 400 x 1,000
480 x 375 x 1,000 525 x 425 x 1,000 575 x 450 x 1,000 587 x 457 x 1,000
600 x 450 x 1,000
2 x 200 x 1,000 3 x 200 x 1,000 5 x 200 x 1,000 6 x 200 x 1,000
8 x 200 x 1,000 10 x 200 x 1,000 12 x 200 x 1,000 15 x 200 x 1,000
16 x 200 x 1,000 20 x 200 x 1,000 25 x 200 x 1,000 30 x 200 x 1,000
35 x 200 x 1,000 40 x 200 x 1,000 50 x 200 x 1,000 75 x 200 x 1,000
3 x 400 x 500 5 x 400 x 500 8 x 400 x 500 10 x 600 x 1,000
16 x 600 x 1,000 20 x 600 x 1,000 25 x 600 x 1,000 40 x 600 x 1,000
8 x 1,000 10 x 1,000 12 x 1,000 16 x 1,000
18 x 1,000 20 x 1,000 25 x 1,000 27 x 1,000
30 x 1,000 35 x 1,000 40 x 1,000 45 x 1,000
50 x 1,000 55 x 1,000 60 x 1,000 65 x 1,000
70 x 1,000 75 x 1,000 80 x 1,000 90 x 1,000
100 x 1,000 110 x 1,000 115 x 1,000 125 x 1,000
135 x 1,000 150 x 1,000 160 x 1,000
Technical Specifications for Vesconite Metric Imperial
Dynamic unlubricated friction coefficient on steel 0.1 0.1
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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