●Robust 8.5-amp motor – delivers 2.4 Ft.-Lbs.(3.2J) of impact energy for reliable Bulldog performance

●KickBack Control(SR320/310-28PA) – uses an integrated sensor to stop tool rotation during bit bind-up situations

●Counter-balanced Vibration Control(SR320-28PA/B) – improves user comfort during drilling or chiseling applications

●Vario-Lock – rotates and locks chisel to optimize working angle

●Variable-speed trigger with reversing – offers accurate bit starting

●HammerHook – allows quick tool storage during the job

●D-handle design – ideal for overhead and downward drilling applications

●Multi-function selector – three modes of operation: drilling only, hammer drilling and chiseling

●SDS-plus® bit system – tool-free bit changes with automatic bit locking

Technical Specification

Rated Voltage (V~)	220-240 / 120
Frequency (Hz)	50 / 60
Rated Input (W / AMPS）	820/8.5
No load Speed (rpm）	0-1500
Impact rate at rated speed (bpm)	0-5000
Impact Energy (J)	3.2(2.4Ft-lbs)
Tool holder	SDS-Plus

Drilling Capacity

Max. Drilling dia. concrete (mm)	Φ28(1-1/8 Inch)
Optimum. appl. range concrete (mm)	Φ22( 7/8 Inch)
Max. dia. concrete core cutters(mm)	Φ65(2-5/8 Inch)

Weight (kg) (based on EPTA)

SR320-28PA/B=3.2Kg

SR310-28PA/B=3.1Kg

Size (mm)