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Next Shipping Day 3rd December

We are now in the process of moving Technobots 120 miles North to the Town of Rugby. You can still place orders on-line as normal but they will not be dispatched until after we re-open on the 3rd December

Machining Services

Our machine shop is also being re-located so we are unable to carry out machining modifications on gears, sprockets, pulleys etc. Any order placed which includes machining options is unlikely to be processed until mid December.


Timing Pulleys & Belts

Technobots FAQ » Transmission (Bearings, gears, sprockets & wheels) » Model Gears, Sprockets and Pulleys » Timing Pulleys & Belts « Previous Next »
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NicBenton
Unregistered guest
Posted on Friday, April 20, 2007 - 9:23 am:    Edit Post    Move Post (Moderator/Admin Only)

What is the maximum speed for timing pulleys/belts (r.p.m or meters per sec) Thanks
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 461
Registered: 10-2004
Posted on Friday, April 20, 2007 - 6:46 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi,

Our supplier does not specify a figure so we would not recommend a speed of greater than 80m/s for our range of timing belts and pulleys.
ewan
Unregistered guest
Posted on Thursday, June 7, 2007 - 12:37 pm:    Edit Post    Move Post (Moderator/Admin Only)

Can you source double sided timing belts (5mm pitch)?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 501
Registered: 10-2004
Posted on Saturday, June 9, 2007 - 4:14 pm:    Edit Post    Move Post (Moderator/Admin Only)

Ewan,

Not currently but we are looking to extend our range of timing belts and pulleys in the future including double sided belts to allow a third pulley to be used i.e. as a belt tensioner.
Robin Fryer
Unregistered guest
Posted on Monday, September 10, 2007 - 1:25 pm:    Edit Post    Move Post (Moderator/Admin Only)

Can you tell me if how one of your aluminium timed pulleys might fit onto a
shaft, does it have its own method of axial location?
Also i saw that there was no pitch specified for the belts or the pulleys, how can i tell if they match?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 576
Registered: 10-2004
Posted on Tuesday, September 11, 2007 - 8:27 pm:    Edit Post    Move Post (Moderator/Admin Only)

Robin,

The timing pulleys fit onto a shaft using the supplied grub screw and hex key. The shaft hole is pre drilled but can be enlarge within limits as required.

We only supply one pitch of timing belts and pulleys but a good question, they are T5 pitch. We will update the site to reflect this.
R.Kenward
Unregistered guest
Posted on Sunday, October 21, 2007 - 3:25 pm:    Edit Post    Move Post (Moderator/Admin Only)

Have attempted to use Aluminium timing pulleys and toothed timing belts to drive the x and y axes of my Chester mill (stepper motor drive, cnc control). Initially the pulleys were separated just enough to put a slight tension on the belt, but in use the belt rose up on the pulleys and jumped one or two teeth per rev. I increased the belt tension with a brass wheel in contact with the outer belt surface on a hinged sprung mount to give adjustable belt tension, and increased the tension until the belt no longer jumped, and this appeared at first to solve the problem completely, however after a few days use, the belts have stretched resulting in tooth jumping all the time. I have thought about a possible remedy and wondered if instead of increasing the tension I place an idler wheel in contact with the back of the belt at the point at which it makes contact with the pulley, so as to physically prevent the belt from rising and so stop tooth skipping. Do you think this would work or do you know any alternative remedy?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 607
Registered: 10-2004
Posted on Monday, October 22, 2007 - 6:54 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi,

Belts rising up over the pulley flange is where they are not correctly tensioned. Stepper motors are really harsh on belts, the pulsing nature of stepper motors with the fast acceleration / deceleration can put stresses on the belt than exceeds its performance rating.

You could try slowing up the ramp times but it is quite possible that you need stronger belts. Unfortunately we do not supply any other versions of pulleys and belts although we are looking to source them in the future. The ones we supply are T5, AT5 are stronger or you could use wider belts or thicker belts.
Dvg (Dvg)
Member
Username: Dvg

Post Number: 2
Registered: 3-2008
Posted on Wednesday, March 26, 2008 - 5:00 pm:    Edit Post    Move Post (Moderator/Admin Only)

can I glue timing belts to make them longer and (even if you do not advise) what glue shall I use. What are they made of?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 746
Registered: 10-2004
Posted on Friday, March 28, 2008 - 12:13 pm:    Edit Post    Move Post (Moderator/Admin Only)

As you did not leave an Email address, we cannot reply personally to you. Our timing belts cannot be cut and glued as they contain a number of steel wire strands for strength.
alan battersby
Unregistered guest
Posted on Thursday, June 19, 2008 - 7:49 pm:    Edit Post    Move Post (Moderator/Admin Only)

I want to get a 6:1 ratio with 10mm timing pulleys without having to make a compound. I see that you do not specify a 60 teeth pulley in your stock list. Have you any thoughts about where I could get such a pulley?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 819
Registered: 10-2004
Posted on Friday, June 20, 2008 - 3:45 pm:    Edit Post    Move Post (Moderator/Admin Only)

Alan,

Our supplier does not produce anything larger than this so sorry we are unable to help.
Martyn Anthony Stevens
Unregistered guest
Posted on Tuesday, December 9, 2008 - 9:40 pm:    Edit Post    Move Post (Moderator/Admin Only)

I need a toothed belt, 5mm pitch, but only 15cm in circumference. Is it possible to cut and rejoin a larger belt?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 937
Registered: 10-2004
Posted on Wednesday, December 10, 2008 - 6:45 pm:    Edit Post    Move Post (Moderator/Admin Only)

Martyn,

The smallest belt we stock is 165mm in circumference. Our timing belts cannot be cut and glued as they contain a number of steel wire strands for strength.
Michael Watts
Unregistered guest
Posted on Friday, May 1, 2009 - 10:45 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hello,

I recently ordered some timing pulleys, they were on the order number MA76AE20013798. Your website specified that the parts 4620-110, 4620-120, would not be bored through, however when they arrived we discovered that they had been bored. Therefore they are not ideal for the purpose we require them for. This has caused an inconvenience because we would have to fabricate sleeves to rectify this problem.

Regards,

Mike Watts and Colleagues
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1051
Registered: 10-2004
Posted on Saturday, May 2, 2009 - 7:14 pm:    Edit Post    Move Post (Moderator/Admin Only)

Mike,

Apologies for that. It appears that despite the manufacturer quoting exact dimensions, they now advise that dimensions are subject to change. We have resolved this with the manufacturer to prevent this from happening again. We will quite happily replace your pulleys if you can return them and we will of course refund the 1st class letter post cost as well.
Hannu Trey (Devili)
Member
Username: Devili

Post Number: 1
Registered: 10-2009
Posted on Friday, October 30, 2009 - 12:13 am:    Edit Post    Move Post (Moderator/Admin Only)

Are MFA timing pulleys compatible with synchroflex timing belts and vice versa?

Is the toothform identical between MFA and synchroflex products?

Is it so that the synchroflex belts are less likely to stretch compared to MFA belts because of the steel wiring?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1138
Registered: 10-2004
Posted on Saturday, October 31, 2009 - 11:12 am:    Edit Post    Move Post (Moderator/Admin Only)

Hi, MFA timing belts and pulleys are T5 profile so any of the T5 Synchroflex range can also be used with MFA products. Both MFA and Synchroflex belts incorporate steel wires for tensile strength.
Paulsc (Paulsc)
Member
Username: Paulsc

Post Number: 1
Registered: 11-2009
Posted on Monday, November 9, 2009 - 11:42 am:    Edit Post    Move Post (Moderator/Admin Only)

what is the diameter of the boss on the 44teeth MFA T5x10mm?
what is the price for the 48 teeth Timing Pulley Synchroflex T5x10mm? Do you have in stock? If no how much will it take?
thanks
Paul Scicluna
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1150
Registered: 10-2004
Posted on Wednesday, November 11, 2009 - 9:21 pm:    Edit Post    Move Post (Moderator/Admin Only)

Paul,

We tried to answer your Email but it kept bouncing back. Here is our reply:

The 44T pulley has a boss of approx 15mm

The price of a T5 x 10mm x 48T are £9.12 each excl VAT and carriage. Please also note that this size does not come with flanges.
John Lukey
Unregistered guest
Posted on Wednesday, November 11, 2009 - 12:41 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi,
Are your Synchroflex T5x10mm x 32 and 36 tooth timing pulleys available in Execution 2?
thanks. Also price for each of these.
Thanks,
John.
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1153
Registered: 10-2004
Posted on Wednesday, November 11, 2009 - 9:40 pm:    Edit Post    Move Post (Moderator/Admin Only)

Execution 2 is only available for sizes above 42T. We may be able to get specials made for you but there would be a minimum order quantity that may not be of use to you if you only need a few.

 

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