The Epiroc SB 302 T is the tunnel version of the SB 302 Solid Body hydraulic breaker, built for scaling, wall and roof profiling and other underground work on 9,900–19,800 lb (4.5–9 t) carriers. Service weight is 690 lb (315 kg) with a 3.15 in. (80 mm) working tool and 15.7 in. (400 mm) working length. Exchangeable restrictors match the breaker to the job: 600–1,400 bpm tunneling, 950–1,250 bpm scaling; operating pressure 1,450–2,175 psi (100–150 bar) tunneling, 1,450–1,595 psi (100–110 bar) scaling; oil flow 13.2–21.1 gpm (50–80 l/min); max hydraulic input 26.8 HP (20 kW) tunneling, 20.1 HP (15 kW) scaling.

Tunnel-specific details include a press-fit bushing locked by an extra pin to limit bore wear, an exchangeable wear plate, integrated nozzles for water spraying, and a special working tool with front shield and dust cover to limit dust intake. The Solid Body concept integrates the power cell and breaker box in one body and eliminates common parts for a slim, compact, lightweight design, energy recovery feeds piston recoil back into the blow, and the maintenance-free high-pressure accumulator and integrated pressure relief valve protect the breaker from overloads. Current and earlier tunnel tool sets are under Epiroc working tools; see the full Epiroc hydraulic breakers range.

• Carrier weight class 9,900–19,800 lb (4.5–9 t); service weight 690 lb (315 kg)
• Working tool 3.15 in. (80 mm) diameter, 15.7 in. (400 mm) working length; tunnel tools supplied with front shield and dust cover
• Impact rate 600–1,400 bpm tunneling, 950–1,250 bpm scaling; exchangeable restrictors for the two modes
• Oil flow 13.2–21.1 gpm (50–80 l/min)
• Max hydraulic input 26.8 HP (20 kW) tunneling, 20.1 HP (15 kW) scaling; operating pressure 1,450–2,175 psi (100–150 bar) tunneling, 1,450–1,595 psi (100–110 bar) scaling
• Integrated water-spray nozzles, exchangeable wear plate, pin-locked press-fit bushing; guaranteed sound power 118 dB(A)
• Supplied as Epiroc configuration 8460030063; carrier adapter plates are carrier-specific and quoted separately; ships by $500 flat-rate Freight from Crowder Supply in Denver