LEHMANN Model 2516 Hollow Spindle Engine Lathe, 27" Swing x 10'
LEHMANN GEARED HEAD ENGINE LATHE.
The Lehmann Machine Co. brought out its geared head engine lathe in the portable type, especially adapted for railroad and other shops doing large work where it is often necessary to bring the tool to the job. This lathe, which is built in two sizes, 16/18¼, and 18/20¼-in. swing, is direct motor driven through belt and idler, a 1800 r.p.m. motor being used, which is light and compact and is mounted in the cabinet of the leg at the head end of the lathe. The pulley and belt and other working parts are all fully covered and protected with suitable guards.
Headstock gives 16 spindle speeds in almost geometrical progression with the use of only 10 gears, all of which are heat treated and of a special grade for the purpose, and some of which are hardened where the service requires. Headstock forms oil tight case enclosing all running parts. All shafts in this headstock run on ball bearings with the exception of spindle which is of alloy steel, hardened (not hardened bearings only) and runs in phosphor bronze bearings amply lubricated. Spindle nose has two diameters both hardened and ground giving two bearings for face and chuck plate, one in front and one behind the threads on spindle nose. Forward and reverse to spindle is obtained through patent friction clutches, running in oil, with control handles conveniently located, one at apron and one at head end of lathe. The clutches positively require no adjustment whatever at any time, and will always pull a little more than the load imposed.
In addition, these lathes include all the other well known Lehmann features, such as the patent quick change mechanism, tailstock spindle locking device, rod and screw shift, etc., which have been described at various other times in these columns.
| Swing | 27.5" | 698.5 mm |
| Centers | 120" | 3,048 mm |
| Spindle Bore | 12.15" | 308.61 mm |
| Power | 30 hp | 22.4 kW |
| RPM | 397 RPM | 397 RPM |
| Dimensions | 228"L x 71"W x 62"H | 228"L x 71"W x 62"H |
| Weight | 15,000 LBS | 15,000 LBS |
SWING OVER BED: 27.5"
SWING OVER CARRIAGE: 18.5"
DISTANCE BETWEEN CENTERS: 120"
SPINDLE SPEED RANGES: 16
SPINDLE SPEEDS: 10 - 397 RPM
FORWARD SPEEDS: 10, 13, 16, 21, 29, 35, 44, 56, 75, 93, 115, 146 RPM
REVERSE SPEEDS: 204, 252, 318, 397 RPM
SPINDLE MOTOR: 30 HP
SPINDLE BORE: 12"
FEED RATES: (54) 0.005 - 0.326 IPR
THREADING: (54) 36 - 5/8 TPI
TAILSTOCK SPINDLE DIAMETER: 4-7/8"
TAILSTOCK SPINDLE TAPER: MT5
TAILSTOCK SPINDLE TRAVEL: 12"
COOLANT PUMP: 1/4 HP
OAD (APPROXIMATE): 228" X 71" X 62"
EQUIPPED WITH:
4-JAW FRONT AND REAR CHUCKS WITH 12" SPINDLE BORE
TAILSTOCK
TAPER ATTACHMENT
