The recognized industry standard for compact air ratchets — now at clearance pricing. Ships from our warehouse.
Shinano calls the SI-1200B the "Mini Ratchet Wrench standard in the air tools industry" — and that is not marketing hyperbole. The SI-1200B has been the reference point against which other compact air ratchets are measured for decades. Automotive technicians, assembly line workers, and maintenance professionals worldwide have standardized on this tool because it delivers consistent, reliable performance in a package small enough to reach where other tools cannot.
The SI-1200B operates at 200 RPM free speed with a maximum torque of 35 Nm (26 ft-lbs). That torque figure is precisely calibrated for 1/4-inch fastener work — enough to drive fasteners firmly without the risk of overtorquing that comes with higher-powered tools. The working torque range of 0–30 Nm gives operators practical control over the fastening process.
At 168mm long and weighing just 0.51 kg (1.11 lbs), the SI-1200B fits into spaces where even a 3/8-inch ratchet cannot reach. The 1/4-inch square drive accepts the full range of standard 1/4-inch drive sockets, making it immediately useful with tooling most shops already own.
| Model | SI-1200B |
| Category | Pneumatic Ratchet Wrench (1/4" Drive) |
| Shank / Drive Size | 1/4" (6.35 mm) square drive |
| Maximum Torque | 35 Nm / 26 ft-lbs |
| Working Torque Range | 0–30 Nm / 0–22 ft-lbs |
| Bolt Capacity | 6.35 mm (1/4") |
| Free Speed | 200 RPM |
| Weight | 0.51 kg / 1.11 lbs |
| Overall Length | 168 mm |
| Height | 44 mm |
| Noise Level | 82 dBA (sound pressure) / 93 dBA (sound power) |
| Vibration (a/k) | 3.6 / 0.8 m/s² |
| Avg. Air Consumption | 1.6 CFM / 0.8 L/s |
| Air Inlet Size | 1/4" |
| Operating Pressure | 90 PSI / 0.63 MPa |
| Origin | Japan |
| Clearance Price (Direct) | ⚠️ NEED CONFIRMATION |
Noise levels per ISO 15744:2008 / ISO 11203:2009. Vibration per ISO 28927.
The tool of choice for automotive technicians working on interior trim panels, engine accessories, dashboard components, and any assembly where a full-size impact wrench or ratchet cannot fit.
Manufacturing facilities use the SI-1200B for light assembly tasks where consistent, controlled torque is required — electronics enclosures, light mechanical assemblies, and precision fastening.
HVAC technicians and electricians use compact air ratchets for fastening equipment mounting hardware, panel screws, and conduit fittings in confined spaces.
The 1/4-inch drive and compact size make the SI-1200B ideal for bicycle and motorcycle maintenance, where many fasteners are in tight locations and torque control is important.
The low vibration, quiet operation (82 dBA), and precise torque range make the SI-1200B suitable for MRO applications in aerospace and defense environments.
Maintenance technicians use the SI-1200B for routine fastener work on industrial equipment — access panels, guard fasteners, instrumentation fittings, and other light-duty applications.
| Feature | Shinano SI-1200B | Ingersoll Rand 107XPA | Chicago Pneumatic CP7830 |
|---|---|---|---|
| Drive Size | 1/4" | 1/4" | 1/4" |
| Max Torque | 35 Nm (26 ft-lbs) ✅ | 27 Nm (20 ft-lbs) | 30 Nm (22 ft-lbs) |
| Free Speed | 200 RPM ✅ | 160 RPM | 180 RPM |
| Weight | 1.11 lbs | 1.1 lbs | 1.2 lbs |
| Noise Level | 82 dBA ✅ | ~83 dBA | ~84 dBA |
| Vibration | 3.6 m/s² | ~4.2 m/s² | ~4.0 m/s² |
| Air Consumption | 1.6 CFM ✅ | ~2.0 CFM | ~1.8 CFM |
| Origin | Japan | USA/Global | Sweden/Global |
| Clearance Price | ⚠️ TBC | ~$80–$110 | ~$75–$100 |
The SI-1200B leads its class in maximum torque (35 Nm), free speed (200 RPM), noise level (82 dBA), and air efficiency (1.6 CFM). It is the most capable tool in this comparison across every performance metric.
Both options ship the same genuine Shinano SI-1200B. Brand new, unused, with full manufacturer warranty.
Explore our full clearance selection of Japanese-made Shinano pneumatic tools: