Properties of POBCO Materials
ENGINEERING DATA |
(4) POBCO-B® Hardwood |
(UHMW) |
Lube-Filled UHMW Plus® |
(12) Repro Ultra-D |
(7) |
(13) |
Drywear UHMWPE |
(11) |
Nylon |
(10) Nylon MD |
|
| CODE LETTERS | B | U | P | UR | UH | CP | DW | NW | N | MD | |
| P.V. Cap psi-fpm (1) | 12,000 | 2,000 | 12,000 | 2,000 | 2,000 | 2,300 | 4,000 | 16,000 | 2,500 | 3,500 | |
| Max. Surface Speed fpm | 500 | 100 | 300+ | 100 | 100 | 100 | 150 | 150 | 100 | 150 | |
| Static Load Cap. psi | 1,000 | 1,000 | 600 | 900 | 1,000 | 1,000 | 1,000 | 1,000 | 1,000 | 1,000 | |
| Service Temp. Range (2) oF | 180 | 180 | 165 | 180 | 275 | 200 | 180 | 230+ | 220 | 220 | |
| Coef. of Friction Ave. | .09 | .15-.20 | .06-.12 | .15-.20 | .15-.20 | .16-.18 | .15 | .15 | .19 | .17 | |
| Abrasion Resistance (3) | 1-3 | 1-2 | 1-2 | 1-2 | 1-2 | 1 | 1-2 | 3 | 3 | 3 | |
| Dim. Stability in Water | Fair | Exc. | Exc. | Exc. | Exc. | Exc. | Exc. | Good | Fair | Fair | |
| USDA/FDA Compliant | Indirect | yes | yes | no | yes | no | no | yes* | yes | no | |
| Chemical Resistance at 73o F* | |||||||||||
| Acid Weak | A | A | A | A | A | A | A | A | A | A | |
| Acid Strong | L | L | L | L | L | A | L | U | U | U | |
| Alkalies Weak | A | A | A | A | A | A | A | A | A | A | |
| Alkalies Strong | L | A | A | A | A | A | A | A | A | A | |
| Hydrocarbon Aromatic | - | L | L | L | L | A | L | A | A | A | |
| Hydrocarbon Aliphatic | - | A | A | A | A | A | A | A | A | A | |
| Ketones | - | A | A | A | A | A | A | A | A | A | |
| Ethers | - | A | A | A | A | A | A | A | A | A | |
| Alcohols | - | A | A | A | A | A | A | A | A | A | |
| Inorganic Salt Solution | A | A | A | A | A | A | A | A | - | A | |
| Continuous Sunlight | A | U** | L | L | L | A | L | L | L | L | |
| Standard Color | Brown | White*** | Grey/Brown | Black/Green | White | Black/Green | Black | *Natural | White/Grey | Black | |
| Low Temp oF* | - | -200 | - | -200 | - | - | -10 | -10 | -10 | ||
ENGINEERING DATA |
Acetal (Delrin®) |
(8) |
Virgin PTFE |
Glass Filled PTFE |
POBLONTM |
(6) |
Rulon® LR Bearing Grade |
Polyester (PET) |
Peek GF Bearing Grade |
| CODE LETTERS | D | DT | T | GT | TM | RF | RB | PT | PK |
| P.V. Cap psi-fpm (1) | 2,000 | 8,000 | 1,000 | 10,000 | 10,000 | 10,000 | 10,000 | 2,800 | 14,000 |
| Max. Surface Speed fpm | 100 | 150 | 100 | 400 | 400 | 400 | 400 | 125 | 100 |
| Static Load Cap. psi | 2,000 | 2,000 | 400 | 800 | 1,000 | 1,000 | 1,000 | 2,000 | 6,000 |
| Service Temp. Range (2) | 180 | 200 | 450 | 500 | 500 | 550 | 550 | 230 | 480 |
| Coef. of Friction Ave. | .22 | .08-.14 | .06-.15 | .10-.13 | .10-.30 | .10-.30 | .15-.25 | .20 | .20 |
| Abrasion Resistance (3) | 5 | 1-2 | 5 | 1-2 | 1-2 | 1-2 | 1-2 | 3 | 1-2 |
| Dim. Stability in Water | Good | Good | Exc. | Exc. | Exc. | Exc. | Exc. | Good | Exc. |
| USDA/FDA Compliant | yes | maybe | yes | no | Yes | yes | no | yes | no |
| Chemical Resistance at 73o F* | |||||||||
| Acid Weak | A | S | A | A | A | A | A | A | A |
| Acid Strong | U | U | A | A | A | A | A | L | L |
| Alkalies Weak | A | A | A | A | A | A | A | A | A |
| Alkalies Strong | U | U | A | A | A | A | A | U | A |
| Hydrocarbon Aromatic | A | A | A | A | A | A | A | A | A |
| Hydrocarbon Aliphatic | A | A | A | A | A | A | A | A | A |
| Ketones | A | A | A | A | A | A | A | L | A |
| Ethers | A | A | A | A | A | A | A | A | A |
| Alcohols | A | A | A | A | A | A | A | A | A |
| Inorganic Salt Solution | - | A | A | A | A | A | A | A | A |
| Continuous Sunlight | U | L | A | A | A | A | A | A | - |
| Standard Color | White | Brown | White | White | White | White | Maroon | White | Beige |
| Low Temp oF* | -40 | -40 | -200 | -200 | -400 | -200 | -200 | - | - |
#1 At Room Temperature #2 At Low PV Levels #3 Rating 1 (Excellent) to 5 (Fair) #4 For more information see POBCO-B Wood and Plastic Bearings #5 Additional Chart available on PTFEs #6 Rulon 641 is Food Approved. Other Rulon Types Available. #7 Thermal Expansion Is Up To 25% Less Than Normal Ultra-D (UHMW) with extended wear life #8 PTFE-Filled Acetal
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#10 Moly-Filled Nylon #11 Lube-Filled Nylon - Bearing Grade Green, FDA Compliant Off White #12 Green & Black Reprocessed UHMW (Mechanical Grade) #13 33% More Wear Resistant than unfilled UHMWPE
A = Acceptable |