Bosch PS31-2A Review

Bosch PS31-2A

Bosch PS31-2A Bosch
PS31-2A

12V Max 3/8"
Compact Drill Driver
3/8" Chuck
Price Level: $$
Torque

265

Max In-Lbs
Speed

1300

Max RPM
Weight

2.1

Lbs w Batt
Battery

1.5

Ah Capacity
Warranty

3

Year

Ratings Guide   Best Better Good FairPoor



KEY STRENGTHS & WEAKNESSES
POWER The PS31-2A is 45% more powerful than average and ranks in the top 20% of Compact-class drills for torque and power. It generates 82 in-lbs more maximum torque than the average 183 in-lbs drill in its class.
SPEED This Bosch cordless drill is 20% faster than average and ranks in the top 40% of Compact-class drills for maximum RPM. It can run at speeds that achieve 215 RPM more than the average 1085 RPM drill in its class.
WEIGHT It is 16% lighter than average and ranks in the top 20% of Compact-class drills for lower weight. It weighs 0.4 lbs less than the average 2.5 lb cordless drill in this class and should decrease operator fatigue.
BATTERY This Lithium Ion (Li-Ion) battery has a 20% higher than average run-time with an amp hour (Ah) rating that ranks in the top 20% of Compact-class drills. It has 0.3 Ah more capacity than the average 1.25 Ah battery in this class.
WARRANTY Bosch's 3-year limited tool warranty is a little longer than average for the cordless drill industry where the standard is about 2-3 years. Longer warranties can often indicate improved durability with fewer repairs.


Bosch PS31-2A Cordless Drill


PERFORMANCE RATINGS
Power 265 in-lbs - The PS31-2A is 45% more powerful than average and ranks in the top 20% of Compact-class drills for torque and power. It generates 82 in-lbs more maximum torque than the average 183 in-lbs drill in its class.
Speed
Settings
2 Settings 0-350 / 0-1300 RPM - Fitted with both Low and High speed settings that come standard on most cordless drills. Speed selection is an important feature to match drilling or driving RPM to each unique job.
Max
Speed
1300 RPM - This Bosch cordless drill is 20% faster than average and ranks in the top 40% of Compact-class drills for maximum RPM. It can run at speeds that achieve 215 RPM more than the average 1085 RPM drill in its class.
Clutch 21 Settings - The Bosch PS31-2A has an above average number of clutch settings that provide a wide range of protection for almost any job. The clutch acts like a brake and helps prevent stripping screws.
Power
Ratio
126 P/W - The Bosch PS31-2A has an 50% higher than average power-to-weight ratio and ranks in the top 20% of efficiently designed Compact-class drills. The P/W ratio is 42 higher than the 84 average ratio for this class drill.
Hammer This cordless drill is not equipped with a hammer function that can deliver several thousand impacts per minute. Hammer drill drivers are usually a little heavier and costlier, but they are effective on tougher jobs such as drilling into concrete.  


DURABILITY RATINGS
Gear
Case
Non-Metal Parts - Some of the Bosch PS31-2A transmission components are made of non-metal materials that are more susceptible to failure. Gears spin at high RPMs and experience large rotational forces.  
Chuck Plastic Sleeve - Chuck sleeves made of tough plastic materials save on weight, but they are more prone to cracking than metal sleeves. It generally won't withstand repeated drops onto hard surfaces.  
Motor No Brush Access - The entire drill usually has to be taken apart in order to access the motor brushes. Motor brushes wear-out and must be replaced periodically, but repair costs can sometimes be prohibitive.  
Warranty 3-Year - Bosch's 3-year limited tool warranty is a little longer than average for the cordless drill industry where the standard is about 2-3 years. Longer warranties can often indicate improved durability with fewer repairs.


BATTERY RATINGS
Type Lithium Ion (Li-Ion) BAT412 - Newer technology rechargeable battery that provides higher capacity and longer run-time with less weight, but are more expensive than the older NiCd and NiMH batteries.
Capacity 1.5 Ah - This Lithium Ion (Li-Ion) battery has a 20% higher than average run-time with an amp hour (Ah) rating that ranks in the top 20% of Compact-class drills. It has 0.3 Ah more capacity than the average 1.25 Ah battery in this class.
Charge
Time
30 min Bosch Charger - Battery charge-time is quicker than average. Nice feature for those times when you don't have a charged replacement battery ready to go and you're in the middle of a job.
Fuel
Gauge
Battery Fuel Gauge - Equipped with an on-board battery charge indicator that keeps you aware of the remaining battery life. Great feature that prevents frustration - no more dead battery surprises.
Backup 2 Batteries Included - It's important to have a second back-up battery for the Bosch PS31-2A that's charged and ready to go. Makes it easy to swap-out batteries during the job with minimal down-time.


CONVENIENCE RATINGS
Weight 2.1 lbs Tool Plus Battery - It is 16% lighter than average and ranks in the top 20% of Compact-class drills for lower weight. It weighs 0.4 lbs less than the average 2.5 lb cordless drill in this class and should decrease operator fatigue.
Length 7 in - Cordless drill length is a personal preference, but shorter is generally better to help you in close quarters such as under a sink, or drilling in-between studs. Torque is harder to handle if the drill is too short though.  
Spindle
Lock
One-Hand Bit Change - This single-sleeve chuck has auto spindle lock. The drill bit can be changed with only one hand by simply spinning the chuck open to release the bit, and counter-spinning it to tighten.
LED
Light
Integrated LED Light - The Bosch PS31-2A illuminates your work area and allows you to clearly see your bit position and depth while you're drilling or driving. Great feature that's now available on many cordless drills.
Belt
Hook
No Belt Hook - There is no provision to hang the drill on your belt and free-up both hands to perform other tasks. You may be able to purchase a separate belt clip that can be attached to the drill.  
Side
Handle
No Side Handle - Side handles are a great safety feature and should be considered if you plan to drive at higher torque levels. They can help prevent injury by providing increased stability and control.  
Bubble
Level
No Bubble Level - This feature is only available on a few drills and can be helpful in situations where precision holes are critical for alignment. Most projects can be performed with just visual sighting.  
Keyless Keyless Chuck - Nearly all cordless drills are now equipped with keyless chucks that can be tightened with both hands (double-sleeve) or just one hand (single-sleeve) without the use of a key.
VSR VSR - Most cordless drills are equipped with variable speed capability that can be controlled with simple trigger pressure. Reverse is usually performed with the push of a side-to-side button.


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