Bearings and Shafts Log Out | Topics | Search
Moderators | Register | Edit Profile

Technobots FAQ » Transmission (Bearings, gears, sprockets & wheels) » Bearings » Bearings and Shafts « Previous Next »

Author Message
G4ztfa (G4ztfa)
Member
Username: G4ztfa

Post Number: 1
Registered: 5-2006
Posted on Sunday, May 28, 2006 - 12:38 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hi,
Can I presume that the EN24T 20mm x 370mm 4425-002 will fit the Pillow Block Pressed Steel Bearing Unit 20mm 4253-003?
I have recently purchased both these parts but the steel bar is too big by about 4-5mm for the hole in the pillow block. Have I been sent the wrong parts? or have I ordered the wrong parts?
Thanks

Gary
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 195
Registered: 10-2004
Posted on Sunday, May 28, 2006 - 3:23 pm:   Edit Post    Move Post (Moderator/Admin Only)

Gary,

Yes they should although sometimes a slight rub down with a fine wet & dry paper (dry) and emery cloth may help. However, from what you describe you have the wrong parts there. If you check the internal diameter of the bearing and the outside diameter of the EN24T and let us know, we shall correct any mistake we have made.

We would Email our response but you have not left us an Email address.
Simon S
Unregistered guest
Posted on Thursday, September 21, 2006 - 11:40 am:   Edit Post    Move Post (Moderator/Admin Only)

Hi

Just phoned you very helpful receptionist and she said this is the best way to contact you.

My Querie:

I Have an XTM XLB 1-7 Scale Nitro Buggy. The problem I have is that under the extreme forces in the differentials the bearings that hold the Pinion gear in place keep collapsing and subsequently strip some teeth off the pinion gear.

Im wondering if the solution to this is to upgrade the type of bearing from a sealed ball type to a sealed roller bearing type?

I'll try to provide you with as much information as I possibly can so here is the link for the PDF owners manual file that gives an exploded view of the buggy in question

http://media.hobbypeople.net/manual/145617.pdf

The parts are listed here

http://globalservices.globalhobby.com/part/145617.asp

and I think the bearing in question is part number
"149563 XTM Ball Bearing 8x16x5 (688zz) - X-T/X-F/Mam"

They don't seem to show the pinion 13T gear but in my manual it describes it as 85x1 part 148423 thi is the part the upgraded bearings will need to hold in place within the input side of.differential housing.

I'll also upload a picture i've found of the section of the diff in question.



I look forward to hearing from you.

Best wishes

Simon
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 267
Registered: 10-2004
Posted on Sunday, September 24, 2006 - 9:31 pm:   Edit Post    Move Post (Moderator/Admin Only)

Simon,

Thank you for such a detailed explanation of the problem. There are different standards to which these miniature bearings are made but I would expect needle or cylindrical bearings to be able to take far more load. Please note that our knowledge of bearings whilst good is not exhaustive. The main issue to overcome is size, assuming that the 8mm shaft and the 16mm overall diameter is fixed, do you have room for wider bearings? Looking at your pic, the bearing housing looks like it can only accept the 5mm width, do you have a pic of the diff with the bearings and gears in? Not sure that we can help but will try.

Regards

Paul
Praful Patel
Unregistered guest
Posted on Wednesday, September 27, 2006 - 5:16 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hi,

Can you tell me the size and positon of the fixing threads on bearing block: 4604-020?

Thanks,
Praful.
Softronic.
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 272
Registered: 10-2004
Posted on Saturday, September 30, 2006 - 7:39 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hello Praful,

Yes, there are no threads but clearance holes for the included M3 x 25mm screws. The bearing blocks are 19.3 x 19.3 x 10.2mm. The 2 off clearance holes are 14mm centre to centre. Trusting that answers your question.
Pam Russell
Unregistered guest
Posted on Friday, October 27, 2006 - 4:59 am:   Edit Post    Move Post (Moderator/Admin Only)

We have a featherweight robot using drill motors and their gearboxes. We have had to remove some of the original gearbox housing from the drill so that our wheels can screw directly onto the spindle but this means that the ball bearings in the gearbox have nothing to hold them in and they can fall through the holes. What is the best way to secure the bearings? I was looking at your "Deep Groove ball bearing" product, would this be an alternative?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 304
Registered: 10-2004
Posted on Sunday, October 29, 2006 - 6:30 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hello Pam,

Regretfully you have not provided us with sufficent information to make a recommendation. We need to know the bearing outside diameter, bore diameter and its depth. We may well have a bearing to suit so if you can provide this information along with a photo as well to avoid any confusion.
Bill_lancaster (Bill_lancaster)
Member
Username: Bill_lancaster

Post Number: 1
Registered: 11-2006
Posted on Friday, November 24, 2006 - 10:11 am:   Edit Post    Move Post (Moderator/Admin Only)

Can you advise the id of the bush which presumably is fitted for Pillow Block Cast Bearing Unit 17mm 4253-015

Thanks
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 330
Registered: 10-2004
Posted on Friday, November 24, 2006 - 12:32 pm:   Edit Post    Move Post (Moderator/Admin Only)

Bill,

Not sure that I understand what you are after here. The bearing has an ID of 17mm so can take a 17mm shaft. Please advise if this does not answer your question. We would have Emailed you but you did not leave an Email contact.
Chris (Teamtanglefoot)
Member
Username: Teamtanglefoot

Post Number: 17
Registered: 5-2007
Posted on Tuesday, February 5, 2008 - 8:11 am:   Edit Post    Move Post (Moderator/Admin Only)

Hi Paul, I was wondering about your needle roller bearings. I intend to use them for the Flipper hinge. I have some 16mm ones for the transmission and intend to use probably 20mm with a 20mm steel bar for the flipper hinge. Do you think they will be suitable for this? Tks Chris
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 699
Registered: 10-2004
Posted on Tuesday, February 5, 2008 - 7:47 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hi Chris,

Our needle roller bearings should not be used with mild steel otherwise the needle rollers will wear the shaft.

You did not mention the type of flipper, the force from the ram or the speed, but assuming it is a 'conventional' rear hinged, the forces can be very high on the rear pivot. on M2 and M2XT, those forces have been high enough to bend 16mm EN24T but I have never bothered with bearings. The ram forces should far exceed the frictions from the wearing surfaces so I'm not sure how much you would gain by using bearings against the risk of bearing failure. Unless you calculate the force on the bearing, I cannot really say for sure.
Chris (Teamtanglefoot)
Member
Username: Teamtanglefoot

Post Number: 18
Registered: 5-2007
Posted on Tuesday, February 5, 2008 - 8:47 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hi Paul Thanks for that, I'll skip the bearings and use 20mm Bar Tks paul Chris
Chris (Teamtanglefoot)
Member
Username: Teamtanglefoot

Post Number: 20
Registered: 5-2007
Posted on Sunday, April 13, 2008 - 11:14 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hi Paul, Glad you sorted the web-site out. Hopefully minimal damage. I just wanted to be sure before I ordered but I have a couple of your bearings. 4256-003 the 17 mm bearings with grub screws. Is part number 4257-013 the correct flange housing for this bearing?. I was going to use the pillow block's I already have but ran into a problem on the new build it would work better using this. Tks Chris
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 760
Registered: 10-2004
Posted on Monday, April 14, 2008 - 2:23 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hi Chris, we did sort it out in the end thank you. Yes, they are the correct size housings for the 17mm bearing inserts.

Kind regards

Paul
hemanth nirmal (Ajay200126)
Member
Username: Ajay200126

Post Number: 1
Registered: 4-2008
Posted on Friday, April 18, 2008 - 3:35 am:   Edit Post    Move Post (Moderator/Admin Only)

hi i need a set of ID=8MM & 12MM ,OD&WIDTH=ANY THING WILL DO
WHICH CAN WITHSTAND 100000RPM
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 769
Registered: 10-2004
Posted on Friday, April 18, 2008 - 7:02 am:   Edit Post    Move Post (Moderator/Admin Only)

Hi, Our 8mm bore bearings have a speed rating of 36 to 40,000 rpm. The 12mm bore are lower again. Sorry we cannot help.
hemanth nirmal (Ajay200126)
Member
Username: Ajay200126

Post Number: 2
Registered: 4-2008
Posted on Friday, April 18, 2008 - 4:04 pm:   Edit Post    Move Post (Moderator/Admin Only)

u said that 8mm has 40000RPM
HOW MUCH A PAIR COST INCLUDING SHIPPING TAXES TO INDIA
MY CITY PIN CODE:520001
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 771
Registered: 10-2004
Posted on Friday, April 18, 2008 - 8:41 pm:   Edit Post    Move Post (Moderator/Admin Only)

Hi,

Sorry but we do not ship outside of the EU at the time of writing.
Rick Turner
Unregistered guest
Posted on Tuesday, August 4, 2009 - 9:53 pm:   Edit Post    Move Post (Moderator/Admin Only)

Can you please tell me what the flange thickness is for "Miniature Flange Bearing MF6801ZZ 12x21x5 - Part No: 4255-191". Your catalogue entry only gives the overall bearing depth. I need to figure out chassis mounting dimensions and cant do so without this figure...

Thanks,

Rick
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1099
Registered: 10-2004
Posted on Thursday, August 6, 2009 - 4:51 pm:   Edit Post    Move Post (Moderator/Admin Only)

Rick,

The flange is 1mm thick.
Jerry Irwin
Unregistered guest
Posted on Wednesday, August 5, 2009 - 1:36 pm:   Edit Post    Move Post (Moderator/Admin Only)

Ref 5 mm and 3 mm inside dia flanged bearing, Can you give me the flange thickness and does width dimension include flange thickness?

Thanks

Jerry Irwin
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1100
Registered: 10-2004
Posted on Thursday, August 6, 2009 - 4:56 pm:   Edit Post    Move Post (Moderator/Admin Only)

The flanges are 0.55 and 0.75mm respectively as best as I can measure and yes the bearing width is overall.
bill winter
Unregistered guest
Posted on Thursday, October 29, 2009 - 9:17 am:   Edit Post    Move Post (Moderator/Admin Only)

re 12mm bearing insert, can you please advise the OA diameter and thickness of the section that fits into your pressed steel pillow block. I may have suitable bearings but need to confirm that they will fit your holders.

Many thanks
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1144
Registered: 10-2004
Posted on Wednesday, November 4, 2009 - 8:54 am:   Edit Post    Move Post (Moderator/Admin Only)

Bill, sorry but I do not have the dimensions to hand but they follow an industry standard. So if you have inserts of the same bore then they should fit. Please note that bearing inserts have a spherical outer profile so that they self align in the housing.
jc
Unregistered guest
Posted on Saturday, March 6, 2010 - 12:07 am:   Edit Post    Move Post (Moderator/Admin Only)

Hi,
possibly a silly question , but I am new to this

How do you fix the needle roller bearing in place, specifically Needle Roller Bearing Drawn Cup 4 x 8 - Part No: 4250-001

i am realy after something like this
20mm Pressed Steel Pillow Housing - Part No: 4257-004

but that will take the needle roller 4250-001.

thansk in advance.
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1224
Registered: 10-2004
Posted on Monday, March 15, 2010 - 7:10 pm:   Edit Post    Move Post (Moderator/Admin Only)

Needle roller bearings are intended to be inserted into your own bearing housing that typically forms part of your fabrications. For example, side plates in a custom made gearbox. We do stock other bearings that are design to fit off the shelf press steel housings but as you will have noticed, they are not available as small as you need.

We also stock small flanged bearings that can be pushed into an accurately drilled hole.

We also stock a couple of model bearing blocks that have either a 5mm or 6mm bore bearing in them.
Nickolas Hunt
Unregistered guest
Posted on Tuesday, March 16, 2010 - 10:12 am:   Edit Post    Move Post (Moderator/Admin Only)

Your part No4255-166 do you have a drawing or the following information:
Thickness of inner ring
width of inner and outside rings
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1227
Registered: 10-2004
Posted on Tuesday, March 16, 2010 - 8:10 pm:   Edit Post    Move Post (Moderator/Admin Only)

Nickolas,

Dimensions of these bearings are included within the item listing on our website and repeated below:

Bore 5mm
Outer Diameter 10mm
Flange Outer Diameter 11.6mm
Width 4mm
Load rating 431N

The only dimension we can add is that the flange is 0.8mm thick.

Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Last Week | Tree View | Search | Help/Instructions | Program Credits Administration