---
product_id: 12361185
title: "RH540M SDS-max 1-9/16 In. Combination Hammer for Concrete | 6.1 ft.-lbs. impact energy, one-handed bit changes, vario-lock positioning, demolition, concrete, jackhammer, demolition"
brand: "bosch"
price: "S$985"
currency: SGD
in_stock: true
reviews_count: 13
category: "Bosch"
url: https://www.desertcart.sg/products/12361185-rh540m-sds-max-1-9-16-in-combination-hammer-concrete
store_origin: SG
region: Singapore
---

# 6.1 FT-LBS impact energy SDS-max tool-free bit changes 12-position Vario-Lock chisel angles RH540M SDS-max 1-9/16 In. Combination Hammer for Concrete | 6.1 ft.-lbs. impact energy, one-handed bit changes, vario-lock positioning, demolition, concrete, jackhammer, demolition

**Brand:** bosch
**Price:** S$985
**Availability:** ✅ In Stock

## Summary

> ⚡ Power through concrete like a pro—because every second counts!

## Quick Answers

- **What is this?** RH540M SDS-max 1-9/16 In. Combination Hammer for Concrete | 6.1 ft.-lbs. impact energy, one-handed bit changes, vario-lock positioning, demolition, concrete, jackhammer, demolition by bosch
- **How much does it cost?** S$985 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/12361185-rh540m-sds-max-1-9-16-in-combination-hammer-concrete)

## Best For

- bosch enthusiasts

## Why This Product

- Trusted bosch brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Chiseling:** Vario-Lock mechanism offers 12 adjustable chisel positions for optimal angle and maximum control.
- • **Effortless Bit Swaps:** SDS-max system enables quick, tool-free bit changes to keep you moving without downtime.
- • **Dual Mode Versatility:** Switch seamlessly between rotary hammer and hammer-only modes to tackle any job with ease.
- • **Unmatched Impact Power:** Delivers 6.1 ft-lbs of impact energy—20% more than competitors for faster, smoother concrete demolition.
- • **Smart Maintenance Alerts:** Service minder brushes notify you when it's time for upkeep, ensuring peak performance and longevity.

## Overview

The Bosch RH540M SDS-max® 1-9/16 In. Combination Hammer is a professional-grade rotary hammer delivering 6.1 ft-lbs of impact energy with a lightweight 15.2 lb design. Featuring a tool-free SDS-max bit system, 12-position Vario-Lock chisel adjustment, and dual mode selector for rotary or hammer-only operation, it maximizes efficiency and precision. Its service minder brushes help maintain peak performance, making it the go-to tool for contractors demanding speed, power, and reliability on tough concrete jobs.

## Description

The Bosch RH540M SDS-max® 1-9/16 In. Combination Hammer is a rotary hammer and hammer-only tool designed for concrete contractors and professional remodelers who need a powerful and versatile tool. It delivers 6.1 Ft.-Lbs. of impact energy while weighing in at only 15.2 Lbs. The motor is rated at 170 to 340 RPM in rotary mode and 1,200 to 2,750 BPM in hammer mode, which will easily reduce concrete to dust. Its SDS-max® bit system allows tool-free and one-handed bit changes. The Vario-Lock mechanism lets users angle the chisel into 12 different positions to optimize the working angle. The hammer has a Dual Mode Selector Knob and service minder brushes, which clearly indicate when preventive maintenance is required.

Review: Heavy Hitter - Highly Recommended. - My crews were using Bosch SDS-Plus hammer drills (the largest hammer size in SDS-Plus models) for years. We use them to break up refractory in fire heaters in refineries, which is incredibly tough. The old models worked well, but took a bit more time. In my line of work, getting the job done safely includes getting it done quickly so my guys are out of the line of fire quicker. I had one of the SDS-Plus models finally give up the ghost after years of abuse on a particularly difficult heater - went to a big box store and saw this model and gave it a try. We went from spending 10 minutes working a single repair area to less than 90 seconds with the extra power this unit provides. It is smoother, quicker and surprisingly light. Less fatigue, better production, less over worked bits and tools, happier crews. Life is good.
Review: Powerful use Bosch SDS Max bits - I had to dig a trench 120 feet and in some places it was over 5 ft deep and I began to hit boulders. I called a local and asked him if a skid steer and a jack attachment would break them up. I was told, you have to dig them out, it would be a waste of time to try and break them up. Challenge accepted. This Bosch RH540M 1-9/16 Inch SDS-Max Combination Rotary Hammer with 5/8 inch and 3/4 Hammer Bit drilled into the boulders and then I split them with some 3/4 Feather and Wedges, those thing are amazing. I also used a Bosch Clay Spade and Chisel Set on the impacted clay. It took about two weeks and it was a lot of work but the drill, bits and spade never let me down and I got the job done and saved a bunch of money not hiring someone with heavy equipment to remove the stones.

## Features

- 6.1 FT.-LBS. OF IMPACT ENERGY, UP TO 20 PERCENT MORE THAN OTHER COMBO ROTARY HAMMERS
- SDS-MAX BIT SYSTEM FOR TOOL-FREE EASY BIT CHANGES
- VARIO-LOCK MECHANISM ALLOWS 12 POSITIONS FOR BEST CHISEL ANGLE
- COMBINATION DUAL MODE SELECTOR KNOB ROTARY HAMMER MODE OR HAMMER-ONLY MODE
- SERVICE MINDER BRUSHES
- INNOVATIVE SERVICE MODULES

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Amperage | 12 A |
| Brand | Bosch |
| Color | Black |
| Item Dimensions L x W x H | 19"L x 4"W x 10.5"H |
| Item Weight | 15.2 pounds |
| Material Type | Metal, Plastic |
| Maximum Chuck Size | 13 millimeters |
| Maximum Rotational Speed | 340 rpm |
| Power Source | Corded Electric |
| Voltage | 120 volts |

## Product Details

- **Amperage:** 12 Amps
- **Brand:** Bosch
- **Maximum Rotational Speed:** 340 RPM
- **Power Source:** Corded Electric
- **Voltage:** 120 Volts

## Images

![RH540M SDS-max 1-9/16 In. Combination Hammer for Concrete | 6.1 ft.-lbs. impact energy, one-handed bit changes, vario-lock positioning, demolition, concrete, jackhammer, demolition - Image 1](https://m.media-amazon.com/images/I/51QO6deKUvL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Can i make payments and this item**
A: put it on your credit card, pay as you like

**Q: Can this drill works with the 2 5/8 core bit?**
A: Thank you for your question. The RH540M will accept up to 4" diameter core bits. If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499).

**Q: Will this drill handle a 1 3/4 inch sds-max chuck bit to drill 18" into limestone for t-posts?**
A: Thank you for your question. The RH540M SDS-max Combination Hammer will work with any SDS-max bit. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

**Q: would it come  with european cable if i buy it ?**
A: Thank you for your question. The RH540M has a 120 voltage ratied cord. If using in a 220 voltage you will need a step down transformer, that will step down the 220 voltage to 120 voltage in order for the tool to work. If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Heavy Hitter - Highly Recommended.
*by J***C on August 5, 2026*

My crews were using Bosch SDS-Plus hammer drills (the largest hammer size in SDS-Plus models) for years. We use them to break up refractory in fire heaters in refineries, which is incredibly tough. The old models worked well, but took a bit more time. In my line of work, getting the job done safely includes getting it done quickly so my guys are out of the line of fire quicker. I had one of the SDS-Plus models finally give up the ghost after years of abuse on a particularly difficult heater - went to a big box store and saw this model and gave it a try. We went from spending 10 minutes working a single repair area to less than 90 seconds with the extra power this unit provides. It is smoother, quicker and surprisingly light. Less fatigue, better production, less over worked bits and tools, happier crews. Life is good.

### ⭐⭐⭐⭐⭐ Powerful use Bosch SDS Max bits
*by D***C on January 14, 2025*

I had to dig a trench 120 feet and in some places it was over 5 ft deep and I began to hit boulders. I called a local and asked him if a skid steer and a jack attachment would break them up. I was told, you have to dig them out, it would be a waste of time to try and break them up. Challenge accepted. This Bosch RH540M 1-9/16 Inch SDS-Max Combination Rotary Hammer with 5/8 inch and 3/4 Hammer Bit drilled into the boulders and then I split them with some 3/4 Feather and Wedges, those thing are amazing. I also used a Bosch Clay Spade and Chisel Set on the impacted clay. It took about two weeks and it was a lot of work but the drill, bits and spade never let me down and I got the job done and saved a bunch of money not hiring someone with heavy equipment to remove the stones.

### ⭐⭐⭐⭐⭐ Meet the Mini Jackhammer
*by K***I on May 15, 2024*

This Bosch tool is a beast, and I mean that in the most flattering of terms. When I first removed it from the box and hefted it I thought, this thing is heavy and big, and operating it is gonna be very difficult, and tiring. Thankfully my assessment was way off. I simply inserted the 3” chisel bit, placed it strategically on the surface I was working on, and IT did the work, ripping up large slabs of backer board, tile included!! It made what I thought would be a long and arduous project into a 1 day deal. It’s the best power tool I’ve ever used. Period.

## Frequently Bought Together

- BOSCH RH540M SDS-max® 1-9/16 In. Combination Hammer
- Bosch HS19R2PK 2 pc. SDS-max® R-Tec Self-Sharpening Chisel Set

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-08-19*