What bearings to use in Bridgeport spindles
Ccould someone remind me what bearings (dimensions) go into lower part
of a Bridgeport spindle? thanks |
What bearings to use in Bridgeport spindles
"Ignoramus5931" wrote in message ... Ccould someone remind me what bearings (dimensions) go into lower part of a Bridgeport spindle? Pretty sure on the r8 spindle it is 2MM207* in Fafnir Industry std nomenclature would be 7207* followed by a letter to designate contact angle, probably B or C In Barden it would just be 207 SNFA has a ******* numbering system IIRC so you'd have to look it up using the boundry dimenions. Here's a nice bearing manual in .pdf http://www.kalamaprecision.com/bearingmanual/ |
What bearings to use in Bridgeport spindles
On 7/31/2011 1:19 PM, PrecisionmachinisT wrote:
Pretty sure on the r8 spindle it is 2MM207* in Fafnir I've got a set of Fafnir's bought on ebay, waiting for time and motivation to install. Box says 2MM207WI DUL, additional info says 100% tested per ABMA STD 13, ABEC 9-MMV There's a couple folks selling these and the Barden bearings on ebay. Might do well to price shop. I don't recall what I paid, but it was a lot less than list price in the MSC catalog. Jon |
What bearings to use in Bridgeport spindles
On 2011-07-31, PrecisionmachinisT wrote:
"Ignoramus5931" wrote in message ... Ccould someone remind me what bearings (dimensions) go into lower part of a Bridgeport spindle? Pretty sure on the r8 spindle it is 2MM207* in Fafnir Got it. Thanks. I have two pairs of 2MM9107WI, and wonder where they go, I thought Bridgeport. Industry std nomenclature would be 7207* followed by a letter to designate contact angle, probably B or C In Barden it would just be 207 SNFA has a ******* numbering system IIRC so you'd have to look it up using the boundry dimenions. Here's a nice bearing manual in .pdf http://www.kalamaprecision.com/bearingmanual/ This is awesome. Thanks |
What bearings to use in Bridgeport spindles
"Ignoramus5931" wrote in message ... On 2011-07-31, PrecisionmachinisT wrote: "Ignoramus5931" wrote in message ... Ccould someone remind me what bearings (dimensions) go into lower part of a Bridgeport spindle? Pretty sure on the r8 spindle it is 2MM207* in Fafnir Got it. Thanks. I have two pairs of 2MM9107WI, and wonder where they go, I thought Bridgeport. Too small at 35X62X28--I would guess they were probably being stocked for a grinding wheel head of some sort and not for something with a through-hole. They would also be about the right size for a low-load high-speed ball screw thrust bearing depending on actual contact angle. Here's a nice bearing manual in .pdf http://www.kalamaprecision.com/bearingmanual/ This is awesome. Thanks You're perfectly welcome. |
What bearings to use in Bridgeport spindles
On Jul 31, 4:27*pm, Jon Anderson wrote:
On 7/31/2011 1:19 PM, PrecisionmachinisT wrote: Pretty sure on the r8 spindle it is 2MM207* in Fafnir I've got a set of Fafnir's bought on ebay, waiting for time and motivation to install. Box says 2MM207WI DUL, additional info says *100% tested per ABMA STD 13, ABEC 9-MMV There's a couple folks selling these and the Barden bearings on ebay. Might do well to price shop. I don't recall what I paid, but it was a lot less than list price in the MSC catalog. Jon ABEC 9? That sounds to me like a bearing for a surface grinder. If you got it cheap, you got a real deal. If memory serves a mill usually uses something like an ABEC 3 (Use caution here, It has been something like 20 years since I checked up on bearings) and a table saw would uses the common ABEC 1. Price goes way up in between. Roger Shoaf |
What bearings to use in Bridgeport spindles
On 2011-08-05, RS at work wrote:
On Jul 31, 4:27?pm, Jon Anderson wrote: On 7/31/2011 1:19 PM, PrecisionmachinisT wrote: Pretty sure on the r8 spindle it is 2MM207* in Fafnir I've got a set of Fafnir's bought on ebay, waiting for time and motivation to install. Box says 2MM207WI DUL, additional info says ?100% tested per ABMA STD 13, ABEC 9-MMV There's a couple folks selling these and the Barden bearings on ebay. Might do well to price shop. I don't recall what I paid, but it was a lot less than list price in the MSC catalog. Jon ABEC 9? That sounds to me like a bearing for a surface grinder. If you got it cheap, you got a real deal. If memory serves a mill usually uses something like an ABEC 3 (Use caution here, It has been something like 20 years since I checked up on bearings) and a table saw would uses the common ABEC 1. Price goes way up in between. Roger Shoaf Yes, I think that these are for Cincinnati #2 grinders. i |
What bearings to use in Bridgeport spindles
On 8/4/2011 6:48 PM, RS at work wrote:
ABEC 9? That sounds to me like a bearing for a surface grinder. If you got it cheap, you got a real deal. If memory serves a mill usually uses something like an ABEC 3 ( IIRC, paid something like $125 for the pair. ABEC9 is more than I need for sure, but it's not like I paid full rate for them. Nothing like a like a little overkill... Jon |
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