Xylem Bell & Gossett e-1510 Series Bedienungsanleitung

Safety

• Proper personal protective equipment (PPE), adequate safety guards and proper material lifting

equipment are required for all machining and grinding operations.

• Gloves suitable for protection from sharp edges should be used during impeller handling and

machining, such as ANSI Cut Level 3 gloves.

Trimming

When it is necessary to reduce the pump ow rate and generated head by trimming the impeller diameter, the

following guidelines apply for machining the outer diameter of stainless steel impellers. These same machining

procedures can also be used for bronze impellers.

• To select the proper reduced diameter, review the pump hydraulic selection data and consult your

local Xylem representative.

• For certain models, as listed in the pump manual, a special Angle Cut is required on the impeller outer

diameter. Before trimming the impeller, look for a section in the pump manual titled Angle Cut.

• The recommended lathe is 30 hp (22 kw) or greater, with a minimum of two tool holders and suitable

for 13.5 in. (342.9 mm) diameter. A 20 hp lathe can be used, but will result in half the depth of cut

during roughing and extended trimming time.

• The impeller must be rigidly held in the lathe, therefore, the use of an arbor is recommended. The arbor

can be overhung from the chuck and does not need a tailstock, but if desired, a tailstock can be used.

See the pump Replacement Parts List if it is desired to purchase impeller trimming arbors.

• The recommended machining insert for roughing is Sandvik RCMT 20 06 MO 2025 and for the nish

cut Sandvik DCMT 3(2.5)2-UM 1115. Both are used without coolant.

e-1510, e-1532, e-1531, e-80, e-80SC, e-80SCXL,

e-82, and e-82SC pumps

Stainless Steel Impeller Trimming Guidelines

INSTRUCTION MANUAL

P2002535

REVISION C

This product can expose you to chemicals including

Lead which is known to the state of California to cause

cancer or birth defects or other reproductive harm. For more

information go to: www.P65Warnings.ca.gov.

WARNING

Xylem and Bell & Gossett are trademarks of Xylem, Inc. or one of its subsidiaries.

All other trademarks are property of their respective owners.

Xylem, Inc.

8200 N. Austin Avenue, Morton Grove, Illinois 60053

Phone: (847) 966-3700, Fax: (847) 965-8379

www.xylem.com/bellgossett

• Recommended spindle speed is 460 surface feet per minute (SFM) (76.2 surface meter per minute (SMM)).

• To calculate the spindle speed (RPM), use the formula RPM=(SFM*12)/(3.1416* diameter of cut, in.)

(RPM=(SMM*39.37)/(3.1416* diameter of cut, mm/25.4)). As reference, the calculation results in the following:

Impeller Max. Diameter Recommended Spindle Speed (RPM)

7 in. (177.8 mm) 251

9.5 in. (241.3 mm) 185

11 in. (279.4 mm) 160

13 in. (330.2 mm) 135

13.5 in. (342.9 mm) 130

14 in. (355.6 mm) 126

15 in (381 mm) 117

15.5 in. (393.7 mm) 113

16 in. (406.4 mm) 110

17 in. (431.8 mm) 103

18 in. (457.2 mm) 97

• Recommended rough cut feed rate per revolution is 0.008 in. (0.20 mm) with depth of cut 0.170 in (4.3 mm)

per side.

• Recommended single nish cut feed rate per revolution is 0.008 in. (0.20 mm) with depth of cut 0.025 in

(0.63 mm) per side.

• For deburring, a high speed air tool is recommended with a ¼” shank and a carbide cone tip grinding burr.

For more information:

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