 |
Kaydon Reali-Slim® open bearings and sealed bearings are marked for complete identification with an (8) or (9) digit part number. Positions 1–8 identify materials, size, type, and precision. Position 9 (optional) identifies non-standard internal fit.
|
|
|
|
|
| Position 1—Material |
| |
Races/balls |
Seals, shields |
| A |
AISI 52100 Steel |
One seal—PTFE |
| B |
AISI 52100 Steel |
Two seals—PTFE |
| D |
AISI 52100 Steel |
One shield |
| E |
AISI 52100 Steel |
Two shields |
| F |
AISI 52100 Steel |
One seal—Nitrile rubber
Lami-seal® |
| G |
AISI 52100 Steel |
Two seals—Nitrile rubber
Lami-seal® |
| H |
AISI 52100 Steel |
One seal—Nitrile rubber |
| J |
AISI 52100 Steel |
Two seals—Nitrile rubber |
| K |
AISI 52100 Steel |
No seals or shields |
| L |
AISI 52100 Steel |
Two seals & Endurakote® plating |
| M |
M-50 Steel |
No seals or shields |
| N |
AISI 52100 Steel |
No seals & Endurakote® plating |
| P |
AISI 17-4PH Steel |
Ceramic balls |
| Q |
AISI 52100 Steel |
No shields or seals |
| S |
AISI 440C Stainless Steel |
No seals or shields |
| T |
AISI 440C Stainless Steel |
One seal—PTFE |
| U |
AISI 440C Stainless Steel |
Two seals—PTFE |
| V |
AISI 440C Stainless Steel |
Two shields |
| W |
AISI 440C Stainless Steel |
Two seals—Nitrile rubber |
| X |
AISI 52100 Steel |
Ceramic balls |
| Y |
AISI 440C Stainless Steel |
Ceramic balls |
| Z |
Other |
|
| Position 2—Series cross section (inches) |
| |
|
Radial thickness |
|
Width |
| Standard cross sections |
A |
*.187 |
x |
.187 |
| or |
.250 |
x |
.250 |
| B |
.312 |
x |
.312 |
| C |
.375 |
x |
.375 |
| D |
.500 |
x |
.500 |
| E |
.625 |
x |
.625 |
| F |
.750 |
x |
.750 |
| G |
1.000 |
x |
1.000 |
| Extended width |
H |
*.187 |
x |
.250 |
| or |
.250 |
x |
.312 |
| I |
.312 |
x |
.375 |
| J |
.375 |
x |
.437 |
| K |
.500 |
x |
.578 |
| L |
.625 |
x |
.727 |
| M |
.750 |
x |
.875 |
| N |
1.000 |
x |
1.187 |
| Extra-extended width |
S |
*.187 |
x |
.312 |
| or |
.250 |
x |
.375 |
| T |
.312 |
x |
.437 |
| U |
.375 |
x |
.500 |
| V |
.500 |
x |
.656 |
| W |
.625 |
x |
.828 |
| X |
.750 |
x |
1.000 |
| Y |
1.000 |
x |
1.375 |
| * Smaller section applies when position 3 is alphabetic—see following explanations of positions 3, 4, and 5. |
| Positions 3, 4, & 5—Size (bearing bore) |
Numeric characters
Nominal bearing bore in inches multiplied by ten
Alphabetic characters
"A" in position 3 in combination with "A" in position 2
denotes .187 x .187 series
"A" in position 3 in combination with "H" in position 2
denotes .187 x .250 series
"A" in position 3 in combination with "S" in position 2
denotes .187 x .312 series
Examples
040 = 4.0" bore
120 = 12.0" bore
400 = 40.0" bore
"10" following "AA" in positions 2 & 3 =
.187 x .187 series with 1.0" bore
"15" following "HA" in positions 2 & 3 =
.187 x .250 series with 1.5" bore
|
| Position 6—Bearing type |
| A |
Angular contact single bearing (not ground for universal duplexing) |
| B |
Angular contact pair—duplexed back to back |
| C |
Radial contact |
| F |
Angular contact pair—duplexed face to face |
| T |
Angular contact pair—duplexed tandem |
| U |
Angular contact single bearing—ground for universal duplexing |
| X |
Four-point contact |
| Z |
Other |
| Position 7—Separator |
| C |
Non-metallic composite, segmental, "snap-over" type |
| D |
Phenolic laminate, one-piece ring "snap-over" type |
| E |
Brass, segmental "snap-over" type |
| F |
Full complement bearing—no separator |
| G |
Nylon one-piece ring, circular pocket |
| H |
Phenolic laminate, one-piece ring with circular pockets |
| J |
Nylon strip separator, circular pockets |
| K |
Phenolic laminate, riveted two-piece ring |
| L |
Nylon, one-piece ring "snap-over" type |
| M |
Formed wire, strip or segmental, "snap-over" type, ball in every pocket |
| N |
Nylon, "snap-over" type |
| P |
Standard formed ring "snap-over" type (material—brass or non-metallic composite) |
| Q |
PEEK, one-piece ring, circular pocket |
| R |
Standard formed ring, circular pocket (material—brass or non-metallic composite) |
| S |
Helical coil springs |
| T |
Stainless steel, formed ring "snap-over" type |
| U |
Stainless steel, formed ring circular pockets |
| V |
Brass, formed ring, "snap-over" type |
| W |
Formed wire, strip or segmental, "snap-over" type |
| X |
PEEK, one-piece, "snap-over" pocket |
| Y |
Brass, formed ring, circular pockets |
| Z |
Other (toroids, slugs, spacer balls or others available) |
| Position 8—Precision |
| (ABEC specifications are per ABMA standard 26.2) |
| 0 |
Kaydon precision class 1 per ABEC 1F |
| 1 |
Kaydon precision class 1 with class 4 runouts |
| 2 |
Kaydon precision class 1 with class 6 runouts |
| 3 |
Kaydon precision class 3 per ABEC 3F |
| 4 |
Kaydon precision class 4 per ABEC 5F |
| 6 |
Kaydon precision class 6 per ABEC 7F |
| 8 |
Other |
| Position 9—Bearing internal fit |
| A |
.0000 to .0005 clearance |
| B |
.0000 to .0010 clearance |
| C |
.0005 to .0010 clearance |
| D |
.0005 to .0015 clearance |
| E |
.0010 to .0020 clearance |
| F |
.0015 to .0025 clearance |
| G |
.0020 to .0030 clearance |
| H |
.0030 to .0040 clearance |
| I |
.0040 to .0050 clearance |
| J |
.0050 to .0060 clearance |
| K |
.0000 to .0005 preload |
| L |
.0000 to .0010 preload |
| M |
.0005 to .0010 preload |
| N |
.0005 to .0015 preload |
| P |
.0010 to .0020 preload |
| Q |
.0010 to .0015 preload |
| R |
.0015 to .0025 preload |
| S |
.0020 to .0030 preload |
| Z |
Other clearance or preload not specified above |
Type X or C = diametral preload or clearance
Duplexed type A = axial preload or clearance
Note: Above internal bearing fits apply to unmounted bearings only.
Mounting fits can greatly affect final internal bearing fit. |
| Position 10–13—DFAR compliance |
|
All Reali-Slim® bearings requiring compliance with Defense Federal Acquisition Regulations (DFAR) "Specialty Metals" and "the Restrictions on Acquisition of Ball and Roller Bearings" clauses will contain '-USA' in positions 10-13. If internal fit is not called out in position 9, it will also contain a dash.
Example #1: KG120XP0L-USA
Example #2: KG120XP0--USA
|
|
|
|
