Cush-N-Aire Zinc Plated Casters (7100)
The 7100 Series Pneumatic-tired Casters maintains Hamilton's heavy-duty construction but with a more compact top plate measuring 4 x 5 in. (10 x 12.7 cm) and specified with a zinc plating finish to prevent rust and wear.
The swivel construction features a drop-forged steel top plate and horn base, legs made of 0.25-in. (0.64 cm) plate steel robotically welded both inside and outside to the horn base, and a 0.75-in. (1.9 cm) diameter integrally forged steel kingpin. To assure smooth swiveling under heavy loads, the 7100 Series features two precisely machined swivel bearing surfaces: a 2.5-in. (6.4 cm) diameter main load raceway and a precision tapered secondary load bearing to counteract radial thrust.
The top plate is offered in wheel sizes from 8 to 12-in. (20 to 30 cm) diameters with a choice of straight roller bearings or precision tapered roller bearings in the wheels. Wheel sizes 16 through 25 in. (40 through 63.5 cm) are also available but with larger top plates.
Because pneumatic-tired casters cushion loads and roll well on paved or concrete surfaces, this series is well suited for aerospace ground support equipment (power towed and manual operations), and sensitive cargo such as military weaponry and any other miscellaneous equipment requiring extra care during transport.
Swivel Construction:
- Legs 0.25-in. thick on 8 and 10-in. models
- 0.38 in. on 12, 16, 21, and 25 in.
- 0.5 in. on 18-in. models, welded inside and outside.
Kingpin:
- 0.75-in. diameter on 8 and 10-in. models
- 1-in. diameter on 12 to 18-in. models
- 1.25-in.dia. on 21 and 25-in. models.
Axle:
Bolt and nut type:
- 0.5-in. diameter on 8 and 10-in. roller bearing models
- 0.75-in. diameter on 10-in. tapered bearing models and all 12-in. models
- 1-in. diameter on all 16 and 18-in. models
- 1.25 in. on 21 and 25-in. models
Tires:
- 8, 10, and 12-in. sizes are 4-ply rated
- 16-in. is 6-ply
- 18-in. is 8-ply
- 21 and 25-in. are 10-ply
