Bosch Rotary Hammer RH850VC 1-7/8 Inch SDS Max (14.5 Amp 9.3 Ft Lbs Impact Energy Vibration Control Turbo Power Concrete Drilling Chiseling Tool)
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Bosch RH850VC 1-7/8-Inch SDS-max 14.5-Amp Combination Rotary and Demolition Hammer
The Bosch RH850VC 1-7/8-Inch SDS-max Combination Hammer delivers heavy-duty rotary drilling and high-output concrete demolition across cured aggregate slabs, rebar-reinforced foundations, stone masonry, and structural footings. Driven by a high-torque 14.5-amp motor producing 9.3 ft-lbs of impact energy, this 20-lb corded hammer features a dual-mode selector to transition smoothly between rotary hammer drilling and hammer-only chiseling operations. An integrated Turbo Power mode directs a 20% power boost directly into chiseling applications, while a multi-stage Vibration Control system combines a decoupled main handle and tuned mass dampener to reduce harmonic fatigue during all-day commercial anchor setting and slab breaking.
Best Used For:
- Structural Concrete Anchor Drilling: Boring large-diameter through-holes and setting 1-7/8-inch heavy structural anchors in cured bridge decks, commercial slabs, and reinforced foundation walls.
- Heavy Concrete Demolition & Trenching: Breaking up thick concrete footings, removing floor tile beds, and trenching utilities using bull point and flat chisels with 9.3 ft-lbs of kinetic impact.
- Core Bit Penetration & Pipe Conduit Passes: Driving large SDS-max core cutters through solid concrete block and structural masonry walls for commercial plumbing and HVAC rough-ins.
Key Performance & Safety Features
- High-Output 14.5-Amp Motor: Generates 9.3 ft-lbs of impact energy to match the drilling and demolition capacity of heavier 2-inch class rotary hammers.
- Multi-Stage Vibration Control: Combines an elongated internal air cushion, tuned mass damper, and decoupled rear handle to absorb punishing recoil vibrations.
- Turbo Power Demolition Mode: Automatically diverts rotational energy to deliver an extra 20% impact boost exclusively when switched to hammer-only chiseling mode.
- Constant Response Electronic Circuitry: Provides smooth soft starts, maintains consistent motor speed under extreme working loads, and protects components against thermal overload.
- Integrated Safety Slip Clutch: Disengages gear drive immediately during bit bind-ups to minimize high-torque rotational kickback and safeguard the operator.
- Tool-Free SDS-max Bit Holder: Features automatic bit locking with maximum impact energy transfer and dust-sealed retention collars.
What's Included
- (1) Bosch RH850VC 1-7/8-Inch SDS-max Combination Rotary Hammer
- (1) 360-Degree Auxiliary Side Handle
- (1) Heavy-Duty Jobsite Carrying Case
Technical Specifications
| Specification | Detail |
|---|---|
| Model Number | RH850VC |
| Motor Amperage Rating | 14.5 Amps |
| Impact Energy (Epta Standard) | 9.3 ft-lbs (12.6 Joules) |
| Operating Voltage | 120V AC, 60 Hz Corded Electric |
| Chuck Interface System | SDS-max (Tool-Free Quick Lock) |
| Maximum Solid Bit Drilling Diameter | 1.875 in (1-7/8 in / 47.6 mm) |
| Operational Function Modes | 2 Modes (Rotary Hammer, Hammer-Only Chiseling) |
| Electronic Speed Regulation | Variable Speed Dial with Constant Response Circuitry |
| Vibration Dampening Technology | Triple-Action Active Vibration Control |
| Safety Protection System | Integral Mechanical Torque-Limiting Clutch |
| Tool Weight (Bare Machine) | 20.0 lbs |
| Substrate Compatibility | Reinforced Concrete, Masonry Block, Stone, Brick, Aggregate Mortar |
Pro-Tip: Clean and apply a dab of high-temperature grease to your SDS-max bit shanks before locking them into the chuck; keeping the drive splines lubricated prevents friction welding inside the barrel during heavy continuous chiseling cycles.
