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Timing Belt Pulleys and V-Belt Sheaves: Matching Belt Drive Components Correctly
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
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2 in stock
RHP 7005CTDUMP4 matched pair of super-precision angular contact ball bearings, 25 x 47 x 12 mm each, 15° contact angle, ABEC 7, medium preload.
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| MFR / Brand | RHP |
|---|---|
| MPN | 7005CTDUMP4 |
| Model | B7005 X2 TADUM EP7 2MM9105WI DUM 7005 C T DUM P4 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 25 mm |
| OD | 47 mm |
| Width | 12 mm |
| Material | Bearing Steel |
|---|---|
| Series | RHP 70 (ISO dimension series 10) |
| Preload | Medium (M); 150 N axial preload as a paired set |
| Base Number | 7005 |
| Industry Terms | Super precision bearing; spindle bearing; duplex pair; matched set; machine tool bearing; grinding spindle bearing; precision angular contact |
| Common Misspellings | 7005 CTDUM P4; 7005CTDUM P4; RHP 7005 C T DUMP4; 7005CTDUNP4 |
| Application Types | Machine tool spindles; grinding heads; high-speed precision shafts; ball screw and lead screw supports |
| Total Width | 24 mm (0.9449 in) for the clamped pair |
| Bore Shaft Size | 25 mm (0.9843 in) |
| Mpn Variants | 7005CTDUMP4; 7005-C-T-DUM-P4; 7005 C T DUM P4; 7005CTDUM; 7005C |
| Arrangement Configuration | Matched duplex pair (DU), universal face control |
| Precision Class | P4 (ABEC 7 / ISO Class 4); RHP class code EP7 |
| Additional Attributes | Internal free volume 3.8 cm3; lubrication jet PCD 32.9 mm; axial stiffness 48 N/micron at medium preload as a paired set; abutments d1 min 30 mm, D1 max 42 mm, D2 max 44.5 mm; chamfers r min 0.6 mm, r1 min 0.3 mm |
| Closure Type | Open |
| Cage Type | Machined, outer-ring guided |
| Dynamic Load Rating | 11.7 kN (11,700 N) |
| Static Load Rating | 7.4 kN (7,400 N) |
| Precision Rating | ABEC 7 |
| Rolling Elements | Ball |
| Max Temp | 120 °C |
| Item Weight | 0.079 kg per bearing; 0.158 kg per pair (0.348 lb) |
| Cage Material | Laminated phenolic resin |
| Limiting Speed | 47,500 rpm oil/air; 29,300 rpm grease |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Snap Ring Included | No |
| Lubricant | Oil/air or grease |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Design Units | Metric |
| Bearing Class | P4 (ISO Class 4) |
| Bearing Material | Carbon chrome bearing steel (SAE 52100) |
| Running Accuracy | Kia 2.5 µm inner ring; Kea 5 µm outer ring |
| Part Number | 7005CTDUMP4 |
| Running Accuracy Radial And Axial Runout | Kia 2.5 µm inner ring; Kea 5 µm outer ring |
| Cross Reference 1 | NSK 7005CTRDUMP4 |
|---|---|
| Cross Reference 2 | RHP B7005X2TADUMEP7 |
| Cross Reference 3 | FAG B7005-C-T-P4S-DUM – P4S vs P4 |
| Cross Reference 4 | Fafnir 2MM9105WI DUM |
RHP 7005CTDUMP4 is a matched duplex pair of single-row super-precision angular contact ball bearings, 25 x 47 x 12 mm each, duplex ground for universal face control at medium preload. Unit Quantity: 2 Pcs. Contact Angle: 15°. Precision Class: P4.
7005 — single-row angular contact ball bearing, ISO dimension series 10, bore code 05 = 25 mm.
C — 15° contact angle.
T — laminated phenolic resin cage, outer ring guided.
DU — matched duplex set, universally face-controlled.
M — medium preload.
P4 — ISO Class 4, ABEC 7, British Standard EP7.
Bore Diameter: 25 mm. Outside Diameter: 47 mm. Overall Width: 12 mm per bearing. Total Width: 24 mm for the clamped pair. Contact Angle: 15°. Precision Class: P4 / ISO Class 4 / ABEC 7 (RHP class code EP7). Cage Material: Laminated phenolic resin. Cage Type: Machined, outer-ring guided. Closure Type: Open. Bore Type: Straight. Rolling Elements: Ball. Series: RHP 70, ISO dimension series 10. Number Of Rows: 1 per bearing. Bearing Material: carbon chrome bearing steel to BS970 534A99/535A99 or SAE 52100. Item Weight: 0.079 kg per bearing, 0.158 kg per pair.
Dynamic Load Rating (Cr): 11,700 N. Static Load Rating (C0r): 7,400 N. Limiting Speed: 47,500 rpm oil/air; 29,300 rpm grease (single bearing under spring preload). Speed factors for medium-preload sets: back-to-back pair 0.60, set of three 0.50, set of four 0.45. Lubricant: oil/air or grease. Maximum Operating Temperature: 120 °C. Preload: Medium (M). Axial Preload, medium grade, paired set: 150 N. Axial Stiffness, medium grade, paired set: 48 N per micrometre. Radial runout of the assembled inner ring, Kia: 2.5 µm. Radial runout of the assembled outer ring, Kea: 5 µm. Source: RHP catalogue C859/B/E/I/03.02, Table 9, row 7005CTRSU.
Inner ring abutment diameter d1 min: 30 mm. Outer ring abutment diameters: D1 max 42 mm, D2 max 44.5 mm. Chamfer r min: 0.6 mm. Chamfer r1 min: 0.3 mm. Effective Load Centre (a): 10.8 mm. Internal free volume: 3.8 cm³. PCD of lubrication jets: 32.9 mm.
Cross-references at 15° and medium preload: NSK 7005CTRDUMP4, RHP B7005X2TADUMEP7, FAG B7005-C-T-P4S-DUM (P4S vs P4), Fafnir 2MM9105WI DUM.
A matched duplex pair (2 Pcs) of single-row super-precision angular contact ball bearings, 25 mm bore, 47 mm outside diameter, 12 mm wide each, with a 15° contact angle.
C is a 15° contact angle, DU a universally face-controlled duplex set, M medium preload and P4 ISO Class 4 / ABEC 7.
Dynamic Load Rating 11,700 N, Static Load Rating 7,400 N; Limiting Speed 47,500 rpm oil/air and 29,300 rpm grease for a single bearing.
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Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Tapered, cylindrical, and spherical roller bearings all solve the same basic problem, carrying more load
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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