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The American Petroleum Institute API severely demands the selection and application of centrifugal pump bearings in the petrochemical industry. The API-610 standard principle clearly specifies the centrifugal pump in the refinery; that is, the thrust bearing needs to be a single row angle with a 40° touch angle in the 7XXX series. Touch ball bearings and back-to-back placement. This requirement allows angular contact ball bearings to withstand large axial loads. Since API-610 is widely accepted and referenced by the petrochemical industry, this specification practice has become the technical specification for centrifugal pumps. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
(1) SKF paired single-row angular touch ball bearings SKF paired single-row angular touch balls are available in 72XX and 73XX series; and the bearing specification accuracy is P6 (not marked in the bearing type); they can be arranged in a back-to-back manner or face to face Ways, etc.
Their suffix meaning:
B 40°, E high load carrying capacity, CB/GA gap/preload SKF has 3 gap levels:
CB specification axial clearance; matched bearing arrangement, CC axial clearance is less than CB, CA axial clearance is less than CC
SKF also has three preload levels:
GA light preload, GB preload is greater than GA grade, GC preload is greater than GB grade,
Cage type:
SKF supplies two types of cage bearings for use in centrifugal pumps in the petrochemical industry. Machined brass cages (indicated by M) and crushed steel cages (indicated by J). In contrast, plastic cage bearings are prohibited.
Here we choose the suffix BECBM angular touch ball bearings used in petrochemical industrial centrifugal pumps. This is not only due to the less internal bearing clearance (CB rating) after assembly, it can well control the bearing internal rolling body sliding; The machined brass cage is more solid than the stamped steel cage; it has a high operational reliability. Because of this; many petrochemical companies are using bearings with the suffix BECBM as their specification bearing.
.2) FAG single-row angular touch bearing FAG bearing suffix means B 40° touch angle MP machined brass cage, UA æ£ ; ;; small internal axial clearance, UO æ£ ; ; ; , P5 P5 precision, TVP plastic cage,
A typical FAG bearing type is shown in Figure 7310B. TVP. UA. Based on our experience; users can't clearly understand the difference in the use of copper cages for plastic cages; they often buy cheap plastic cage bearings. We should advise users to use the correct and reliable bearings.
.3) NTN/NSK single row angular touch bearing NTN/NSK single row angular touch bearing suffix means:
B 40° touch angle, A 25° touch angle, C 15° touch angle, J-pressed steel cage, LI machined copper alloy cage, DB back-to-back equipment, DF face-to-face equipment, CS radial clearance is larger than the specification clearance (SKF uses axial clearance).
A typical NTN bearing type is exemplified by the 7310BDB. It is found in many customers' bearing warehouses; most of these bearing cages are crushed steel cages; not brass cages.
The specification accuracy of NTN/NSK single-row angular touch bearing is general grade; and the matching is completed in the bearing manufacturer. The accuracy of SKF bearing is P6; the bearing is “comfortable combinationâ€; this greatly facilitates the user's operation and inventory. Optimization of handling. In contrast, NTN and NSK bearings have a general level of accuracy; and the pairing is completed in the manufacturing plant; therefore, they cannot be exchanged with each other; the user has to strictly follow the specified type of bearing.
.4) The angular touch ball bearing with the suffix suffix BECBM is the best choice for petrochemical industrial centrifugal pumps; this bearing has the following features:
0? Specification accuracy P6 (not specified in the bearing type),
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0?? 骰 ?? 3 埽蛔罴 埽蛔罴 3 3 芾嘈 芾嘈 芾嘈?
0?岢机械æ»Ð±é¦€æ¶ 裕?br> SKF's service level SKF can help users know:
0? å“‚ 笥 笥 å…œ å…œ å…œ å…œ å…œ å…œ å…œ å…œ å…œ å…œ 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 纬 纬 纬 纬囊è¯é˜é˜æ¡‘? br> 0? å²¢ 粞∈ 粞∈ 粞∈ èœ èœ èœ èœ åˆ åˆ åˆ åˆ åˆ åˆ èœ èœ èœ èœ å å å å å å å å å å å å å å å å å å å å å å 苌儆 åˆå¢’?é…虮兜木?盟鹗 Ð’?br> 0??? Pure 黾嗖猓 å‹– å‹– å‹– 饬 饬 饬 饬 椒 椒 椒 椒 椒 椒 è— è— è— ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒ ãƒæ°–怪岢蟹(5)? Washing 蟮æ¯æ±‰æ¡‘?br> 0?岢惺?У淖钜è¯é˜é˜å¢’墒饣?å»´å»´è†?br> 0?旆ǎ?br> 0? The inductive performance of KF products and services
0? 抻 抻 ã·é³Œ ã·é³Œ ã·é³Œ ç ‘ ç ‘ ç ‘ ç ‘ ç ‘ ç ‘ ? ? ? ? ? ? ? ? ? ? ? ? ??
SKF can assist users with:
0?Stolen??厩??
0? Pregnant?
0? å²¢ ç¯å¨´ ç¯å¨´ ç¯å¨´ ? æš? Stew?
0?骷跬J clumsy?
0?ç ‘è¸Š?é“慰啃?
0? ç ‘ by ??
0? Bandit?
Totally; petrochemical industry customers love the best bearings; because of any unexpected equipment stop, they have caused huge losses to users; and they are under great pressure. In addition to providing customers with quality products; good service and technical knowledge Outside the training; can also assist customers to optimize their bearing inventory and cost.
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Skf bearing in the petrochemical industry
Source: Bearing network time: 2013-12-27