RM-Hot 시리즈는 내열 휠 재질(내열 나일론, 페놀, 주철, 단조강)을 특수 그리스 및 열팽창 여유를 고려한 피팅과 결합하여, 열 사이클 이후에도 캐스터가 계속 구르도록 합니다.
표준 휠은 오븐에서 연화, 접착 박리 또는 뻑뻑함으로 고장 납니다. RM-Hot 부품은 최대 온도뿐 아니라 반복 가열을 기준으로 선정됩니다.
사양
- +120 °C ~ +280 °C 등급의 트레드 옵션(그 이상은 페놀 / 주철)
- 내열 베어링 그리스
- 열에 안정한 브래킷 피팅 및 확대된 운전 클리어런스
- 열 사이클 후 시험을 거친 브레이크 및 선회 옵션
대표 재질
내열 나일론, 페놀 수지, 주철, 단조강
| 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 |
표면 처리
내열 도장 또는 단조 그대로
| 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 |
시험
사내 열 사이클 시험 실시
| 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 |
Capability commitments on this page are owner-confirmed (2026-09-29).