Eastwood 31638 Swing-Arm Tire Changer, 120V
Eastwood 31638 is a swing-arm tire changer using 120V electrical power and pneumatic functions. Wheel capacity depends on how the rim is clamped: the listed external range is 10–18 inches, while the internal range is 12–21 inches. Compare the required clamping method before treating a headline rim range as universal coverage.
Specifications and included details
- External rim clamping: 10–18 inches; internal rim clamping: 12–21 inches.
- Maximum listed rim width 16 inches; maximum tire diameter 45 inches.
- Power requirement: 120 VAC, 60 Hz; shop-air operating range 115–145 PSI.
- Turntable speed 6 RPM; usable footprint listed as 70 inches high × 43 wide × 37 deep.
Before ordering
Confirm rim construction, clamp method, tire dimensions, electrical supply and compressor capability. A suitable compressor is required; pneumatic functions do not make this an air-free machine. No guaranteed run-flat coverage, scratch-free operation or compressor flow requirement is stated.
Product questions and answers
Can it clamp a 21-inch rim externally?
The stated external limit is 18 inches. The 21-inch upper limit belongs to internal clamping, so those ranges should not be combined.
Does it require both electricity and compressed air?
Yes. The specifications state 120 VAC at 60 Hz and an air operating range of 115–145 PSI.
Are maximum tire diameter and rim width the same measurement?
No. The listed 45-inch limit is overall tire diameter, while the 16-inch limit is rim width. Check each requirement separately.
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