العجلات الموصلة تُخرج الشحنات الساكنة عبر المطب إلى الأرضية، فتحمي لوحات الدوائر المطبوعة والرقائق وعمليات مناولة المساحيق؛ وتركيبات مضادة للكهرباء الساكنة تمنع تكوّن شحنات خطرة على العربات والرفوف.
وتُقاس قيم المقاومة لكل دفعة ويمكن توثيقها مع كل شحنة.
المواصفات
- تركيبات PU ومطاط موصلة بمقاومة سطحية مقيسة
- تقارير اختبار المقاومة متاحة لكل دفعة
- متوافقة مع أنظمة أرضيات ESD
- خيارات حوامل من الفولاذ والفولاذ المقاوم للصدأ
المواد النموذجية
بولي يوريثان موصل / مطاط موصل على قلوب موصلة
| Wheel material | Typical hardness | Floor protection | Where it fits |
|---|---|---|---|
| Cast polyurethane (PU) | Shore A 92–95 | Very good: non-marking compounds | AGV/AMR, trolleys on painted or epoxy floors, heavy duty |
| Injected PU | Shore A 90–95 | Good | Cost-sensitive medium duty, light equipment |
| Cast nylon (PA6) | Shore D 70+ | Fair: hard tread | High load, dry indoor logistics, washdown |
| Glass-filled nylon | Shore D 75+ | Fair | Higher loads and temperatures than PA6 |
| Solid rubber | Shore A 65–75 | Good | Shock absorption, outdoor thresholds, economy |
| Super-elastic rubber | Shore A 55–65 | Excellent | Quiet running: medical, hotel, laboratory |
| Phenolic resin | — | Fair | Baking lines and ovens up to +280 °C |
| Forged steel | — | None: needs steel plate or heavy concrete | Extreme loads, heat, harsh floors |
| Stainless (wheel/bracket) | — | Good | Food, pharma, washdown, corrosive areas |
التشطيبات
جلفنة أو فولاذ مقاوم للصدأ
| Bracket finish | What it does | Specify it when |
|---|---|---|
| Zinc plating (blue/white) | Baseline corrosion protection | Standard dry indoor use |
| Chrome plating | Hard, decorative, easy to clean | Visible / cleanroom-adjacent equipment |
| Powder coating | Custom color, good corrosion resistance | Brand colors, outdoor-adjacent use |
| Stainless steel 304 | No plating to fail | Washdown, food, medical |
| Stainless steel 316 | Resists chlorides | Salt, brine, marine air, harsh cleaning chemicals |
الاختبار
المقاومة السطحية تُقاس لكل دفعة
| Selection factor | Rule of thumb | Effect on performance |
|---|---|---|
| Load sizing | Total load ÷ 3 (not ÷ 4) | On uneven floors only three wheels carry the cart |
| Wheel diameter | Bigger rolls easier | Larger wheels cut push force and bridge gaps |
| Tread hardness | Softer = quieter, harder = easier rolling | Pick the softest tread that carries the load |
| Bearing choice | Precision ball for manual pushing, roller for heavy loads | Bearings dominate rolling resistance at high load |
| Swivel vs rigid | 2 swivel + 2 rigid is the standard cart setup | All-swivel carts wander; all-rigid carts cannot steer |
| Floor condition | Rough floors need bigger wheels and softer treads | Small hard wheels on bad floors destroy both |
منتجات ذات صلة
Capability commitments on this page are owner-confirmed (2026-09-29).