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5 in stock
Thin section angular contact ball bearing, 7.500 in bore x 8.500 in outside diameter x 1/2 in wide, square 1/2 x 1/2 in cross section. Type A single row taking thrust in one direction only, open with a one-piece machined brass separator, ABEC 1.
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Original price was: $849.01.$636.76Current price is: $636.76.
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| MFR / Brand | FAG |
|---|---|
| MPN | L15TA708YP |
| Model | L15TA708 YP |
| Bearing Type | Angular Contact Ball Bearing |
| ID | 7.5 in |
| OD | 8.5 in |
| Width | 0.5 in |
| Condition | New |
|---|---|
| Base Number | L15TA708 |
| Industry Terms | thin section bearing, thin ring bearing, Reali-Slim, Silverthin, slim section bearing, large bore thin bearing, Type A angular contact, open thin section |
| Application Types | Robotics joints and rotary axes, gimbals and pan-tilt heads, rotary and index tables, medical imaging gantries, semiconductor wafer handling, optical and radar positioners, machine tool indexers |
| Bore Shaft Size | 7.500 in |
| Mpn Variants | L15TA708YP, L15TA708-YP, L15TA708, L15 TA 708 YP, L15TA-708-YP |
| Manufacturer Status | FAG legacy thin section reference. Equivalent Kaydon and Silverthin numbers are current. |
| Compatible With Replaces | Direct replacement for Kaydon KD075AR0 and Silverthin SD075AR0. The CP0 (radial contact), XP0 (four-point), BR0 (duplex back-to-back) and FR0 (duplex face-to-face) variants at the same bore are different internal designs. |
| Arrangement Configuration | Single row Type A — carries thrust in one direction. Reversing thrust is served by a duplex pair (BR0 back-to-back or FR0 face-to-face) or a four-point contact bearing (XP0). |
| Precision Class | ABEC 1 |
| Additional Attributes | Square cross section 1/2 x 1/2 in, confirmed arithmetically: (8.500 - 7.500)/2 = 0.500 in wall per side = the 0.500 in width. Land diameters L1 7.870 in, L2 8.130 in, L3 counterbore 8.236 in. Maximum fillet radius cleared 0.060 in. Race width tolerance +0.000 / -0.005 in. Corners normally chamfered. Dynamic thrust load capacity 6,250 lbf; static thrust 18,240 lbf. Radial and thrust ratings are NOT additive - a combined load must be checked against a combined-load calculation. DESIGNATION DECODE: L15 = FAG thin section prefix; T = cross-section code (Q = 1/4, R = 5/16, S = 3/8, T = 1/2 x 1/2 in, mapping to Kaydon A/B/C/D); A = Type A single-row angular contact; 708 = bore in whole inches plus sixteenths (7-08/16 = 7.500 in), NOT hundredths - corroborated by SKF using the identical digits in FPAD708; YP = one-piece machined brass circular-pocket separator. Note the Kaydon section letters differ from FAG's, so the correct Kaydon cross is KD075AR0 - KA075AR0 exists but is 7.500 x 8.000 x 1/4 in, a different bearing. PROVENANCE: no published Schaeffler or FAG document giving the Q/R/S/T section table was located; the mapping is derived from three independently verified dimensional data points plus the Silverthin interchange. NOT PUBLISHED: ball count. |
| Item Weight | 1.42 lb |
| Cage Material | Brass |
| Number Of Rows | 1 |
| Contact Angle | Not specified |
| Design Units | Inch |
| Part Number | L15TA708YP |
| Cross Reference 1 | Kaydon KD075AR0 |
|---|---|
| Cross Reference 2 | Silverthin SD075AR0 |
| Cross Reference 3 | SKF FPAD708 |
| Cross Reference 4 | NSK NBA19012 |
| Cross Reference 6 | RBC KD075AR0 |
| Cross Reference 7 | SSB RD075AR0 |
| Cross Reference 8 | INA CSAD075 (Schaeffler in-house sibling, not a third-party substitute) |
A thin section angular contact ball bearing, 7.500 in bore x 8.500 in outside diameter x 0.500 in wide. It is the direct equivalent of Kaydon KD075AR0 and Silverthin SD075AR0 — open, single row, Type A angular contact, with 1/4 in balls in a one-piece machined brass pocket separator, ABEC Class 1.
Outside diameter minus bore is 8.500 − 7.500 = 1.000 in, giving 0.500 in of wall each side. That equals the 1/2 in race width exactly, so the cross section is a true 1/2 x 1/2 in square — the defining geometry of a thin section bearing.
L15: FAG thin section series prefix.
T: the cross-section code. In this family Q, R, S and T are ascending section sizes mapping to the Kaydon letters: Q = 1/4 x 1/4, R = 5/16 x 5/16, S = 3/8 x 3/8, T = 1/2 x 1/2. The T here is what makes this the 1/2 in section.
A: Type A, single row angular contact, thrust in one direction.
708: the bore in whole inches plus sixteenths, not hundredths. 708 reads as 7 and 08/16, which is 7.500 in. SKF uses the identical digits in its FPAD708 equivalent.
YP: one-piece machined brass circular-pocket separator.
Static radial load capacity: 6,320 lbf.
Dynamic radial load capacity: 2,536 lbf (Kaydon method); 4,608 lbf on the ISO 281:1990 basis, shown for comparison only.
Static thrust load capacity: 18,240 lbf.
Dynamic thrust load capacity: 6,250 lbf.
Land diameters: L1 7.870 in, L2 8.130 in, L3 (counterbore) 8.236 in.
Ball diameter: 1/4 in.
Race width tolerance: +0.000 / −0.005 in.
Precision: ABEC Class 1.
Weight: 1.42 lb.
Corners: normally chamfered.
Radial and thrust ratings are not additive; a combined load is evaluated against a combined-load calculation.
A thin section bearing trades load capacity for envelope and mass. The rating is much lower than a conventional ball bearing of the same outside diameter, in exchange for a very thin radial wall and a very large open bore. The design driver is almost always something that has to pass through the middle: a hollow shaft, a cable bundle, a slip ring, a laser path, a coolant line. Hence their dominance in robotics joints, gimbals, rotary and index tables, medical imaging gantries, semiconductor wafer handlers, and optical and radar positioners.
Maximum fillet radius cleared: 0.060 in at both shoulders.
Land diameters for housing and shaft interfaces: L1 7.870 in, L2 8.130 in, L3 counterbore 8.236 in.
Thin rings adopt the form of the housing bore and shaft seat, so roundness and flatness of those seats govern running accuracy.
Type A carries thrust in one direction only. Reversing thrust is served by a duplex pair (BR0 back-to-back or FR0 face-to-face) or a four-point contact bearing (XP0).
Direct equivalents: Kaydon KD075AR0, Silverthin SD075AR0, SKF FPAD708, NSK NBA19012, NTN KYD075, RBC KD075AR0, SSB RD075AR0, INA CSAD075. FAG and INA are both Schaeffler Group brands, so the INA reference is an in-house sibling.
Related but functionally different variants at the same bore: SD075CP0 / KD075CP0 (radial contact), SD075XP0 / KD075XP0 (four-point contact), SD075BR0 / KD075BR0 (duplex back-to-back), SD075FR0 / KD075FR0 (duplex face-to-face).
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