Crandall Dry Dock Engineers Component
Roller Systems and Wheels
Low-friction cast alloy iron roller frames, spreaders and double flanged truck wheels for marine railway cradles.
Description
The typical marine railway cradle moves on low-friction, maintenance-free cast alloy iron rollers. Modern Crandall roller systems use steel angle frames with malleable iron bushings welded into accurately drilled or punched holes.
Key features
- Roller friction of 1% to 2%
- Design reduces roller friction, eliminates roller flange failure and reduces cradle surging and derailment risk
- Rollers from 2-3/4" to 4-1/2" diameter for 4" to 14" rail plates (T-127 to T-212)
- Cast iron spreaders (B-75X to B-113X)
- Roller pintle bushings, frame connectors and toggle pins
- Roller frame bridle system and double flanged truck wheels
- Cast steel rollers on request
Applications
New and rebuilt marine railway cradles.
Specifications
| Roller friction | 1% to 2% |
|---|---|
| Roller diameter | 2-3/4" to 4-1/2" |
| Rail plate width | 4" to 14" |
More from Crandall Dry Dock Engineers
- Dry Dock and Transfer System Design
- Docking Capacity Inspection and Certification
- Dry Docking Consulting, Docking Plans and Diving
- Crandall Hauling Machinery
- Crandall Hauling Chain and Chain Gear
- Crandall Bilge Block Systems
- Crandall Mooring Systems for Floating Dry Docks
- Crandall Rail Plates and Track Bolts
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