Posted 20 hours ago

Makita Schleifböcke 250W 2850 U/min

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Like most other bench grinders, other types of discs, such as wire wheels and polishing mops, can be swapped into the place of the bog-standard grinding stones. However, similar to other low-powered machines, this is not recommended as the limited torque means that the machine easily grinds to a halt if too much pressure is applied. Lower bench grinding speeds help keep heat build-up under control - If available, use a lower bench grinding speed to keep the heat build-up, on both the object being ground and the grinding wheel itself, under better control. The BG150CX bench grinder from Sealey is the first member of a range of bench grinders from the company. The BG150CX represents their most basic model, which means it has the minimum of features but also the lowest of prices. Like many other budget machines, it belongs to a family of ‘generic’ machines that are often sourced from the same manufacturer, coloured and then badged with the insignia of the retail distributor, in this case, Sealey.

Makita - Product Details - GB602 150mm Bench Grinder Makita - Product Details - GB602 150mm Bench Grinder

The Sealey BG150XLW/98 is a powerful bench grinder that comes with a grinding wheel and one wire wheel. It has a 370W motor that is strong enough to grind some of the harder metals, and it can be used for longer than budget models before it needs to be given a rest to cool down. The wire wheel is useful for removing old coatings on metal objects such as paint or rust and of course other wheels can be swapped into place of the grinding wheel or the wire wheel as needed. The unit runs smoothly, with little vibration, but it still needs to be bolted down to the workbench to ensure it does not move at all. Niggles with the Sealey bench grinder are common to most bench grinders in this price range, for instance, care still needs to be taken not to put too much pressure on the spinning wheels as this will cause them to slow down, reducing its ability to effectively grind or polish. As for other types of activities that can be undertaken on the bench grinder, the Clarke CBG6RP machine is not powerful enough for regular polishing work but, at a stretch and if not too much pressure is applied on the wheel, can be used for some very light buffing when used with an appropriate polishing wheel. The Clarke CBG6RP 6-inch bench grinder is relatively heavy considering its motor size coming in at around 8kg which bodes well for greater stability on the bench top, but not so for moving it around a lot. In fact as with most bench grinders, the Clarke machine should be bolted down to the bench top for maximum safety and in this regard there are four screw holes moulded into the base of the machine designed to permanently fix it into place.As with most other consumer bench grinders, the Titan comes with coarse and fine grinding discs, namely 30-grit and 60-grit wheels, but as an added bonus, a useful brush wheel is also included in the box. Unfortunately, however, not a lot of thought has gone into the use of wire wheels on the Titan grinder as the included one can sometimes partially brush against the wheel guard securing bolts which protrude a fair amount. Continuous striking of these bolts with the wire wheel will eventually damage them making removal of the wheel guard more problematic. One option is not to use the wheel guard at all when using a wire wheel but this poses an increased safety risk to the operator and is not recommended. The Draper 29620 is a middle-of-the-range bench grinder with a 370W motor allowing it to handle some heavy duty grinding. In general, it is solidly built, the wheels are well-balanced, running smoothly with little vibration. The machine comes with 36 grit and 60 grit grinding wheels, which are a little too corase for delicate blades, but as with most other bench grinders the grinding wheels can be swapped out for other types of discs if need be. The unit weighs a hefty 12 kg so it is unlikely to move much but it can be bolted down to the workbench using only two holes in the base of the unit. Overall it is a good medium-level bench grinder, however, it is let down by the inclusion of less-than-adequate tool rests which can deform when grinding something substantial, and the fixings of the tool rests and various other components on the machine, are woefully below the standard of what is otherwise a good machine. Finally, one feature on the Titan that we don’t particularly like is the use of a 16 mm spindle bore. Most consumer bench grinders come with a 12.7 mm spindle and the majority of grinding wheels on sale to the consumer tend to cater to this smaller spindle, either by having 12.7mm bore holes or by coming which bushes that adapt them to this smaller shaft size. This makes finding replacement grinding discs and other wheel types for the Titan bench grinder slightly more difficult and seems like an unnecessary complication.

Makita UK User Manuals - Makita UK

On the more negative side, although most of the motor housing on the Clarke bench grinder is made of metal, the base of the machine is made out of plastic which, although tough, would have been better if it too was made out of metal so as to increase long-term robustness. One other point to note with the Clarke machine is that the bench grinder is only designed to continuously operate for five minutes at a time before needing to cool off for five minutes. This can sometimes make using the bench grinder inconvenient especially with prolonged grinding jobs. You will definitely get more use out of an 8” grinder and a variety of wheels than you would with a 6” grinder and the same set of wheels. Choosing the best bench grindersKnow the maximum speed of the grinding wheel and the bench grinder - When purchasing new grinding wheels, make sure that the maximum speed of the wheel is not lower than the rotational speed of the bench grinder it is to run on otherwise spinning the wheel at too high a speed can cause it to disintegrate during use and presents a safety hazard. Like most heavy-duty grinders, the Dewalt DW758 8” only runs at a single speed. Even so, it does a great job of shaping tools, deburring, and removing rust spots.

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