Page 728 - All Industrial Tool Supply | General Catalog

TURNING • Live Centers
726

Value-Turn Live Centers

APPLICATIONS:
• Excellent for light/medium-duty work on manual and CNC lathes.
FeATureS:
• ±0.0001" TIR guaranteed.
• Dual radial bearings and a thrust bearing combine to provide solid load ratings.
• One-piece point/case is hardened for long life.
• Sealed rear bearing protects assembly from coolant and chips.

MorSe _____________________________DiMenSionS____________________________ MaxiMuM WeighT of ThruST MoDeL orDer priCe
Taper a B C D e f g rpM WorkpieCe LoaD # # eaCh
1 MT 2-1/8" 1-11/16" 2-3/8" 4-13/16" 1-9/16" 7/8" 3/4" 5,000 390 lbs. 3,730 lbs. 10851 69-204-251† $257.99
2 MT 2-9/16 1-11/16 2-13/16 5-1/4 1-9/16 7/8 3/4 5,000 390 3,730 10852 69-204-252 238.99
3 MT 3-3/16 1-11/16 3-7/16 5-7/8 1-9/16 7/8 3/4 5,000 390 3,730 10853 69-204-253 256.99
4 MT 3-1/16 2-7/16 4-7/16 7-11/16 2-1/32 1-3/16 1-1/8 4,500 750 4,990 10854 69-204-254 311.99
5 MT 4-3/16 2-7/16 5-9/16 8-13/16 2-1/32 1-3/16 1-1/8 4,500 750 4,990 10855 69-204-255 349.99
†Ships direct from factory.
Spring Type Live Centers
Dual Roller Bearings
FeATureS:
• ±0.00005" TIR guaranteed.
• Ultra low-profile body provides outstanding tool clearance.
• Unique spring-loaded design compensates for thermal expansion of the workpiece by allowing the point to slide
axially as the part grows.
stAnDArD point • A series of heavy disk springs keep the point firmly seated in the center-hole of the workpiece.
• Dual roller bearings provide solid radial load capacities.
• Axial loads are handled by a special thrust bearing located between the point and springs.
• Body and point are hardened for wear resistance and long life.
• Bearings are protected from coolant and chips by a neoprene seal.
• Extended point provides tool clearance for CNC applications. Multiple Point Styles To Suit All
Applications Available, Please Call
STanDarD poinT
______DiMenSionS______ Spring MaxiMuM WeighT of ThruST MoDeL orDer priCe
Taper
B f g TraVeL rpM WorkpieCe LoaD # # eaCh
2 MT 0.70" 0.88" 0.39" 0.11" 5,000 540 lbs. 150 lbs. 10522 69-204-122† $419.99
3 MT 0.94 1.16 0.55 0.14 5,000 940 315 10523 69-204-123 491.99
4 MT 1.23 1.38 0.63 0.18 4,500 1,400 435 10524 69-204-124† 581.99
5 MT 1.75 2.00 1.10 0.19 4,500 2,340 785 10525 69-204-125† 861.99
†Ships direct from factory.
eXtenDeD CnC point
exTenDeD CnC poinT
__________DiMenSionS__________ Spring MaxiMuM WeighT of ThruST MoDeL orDer priCe
Taper
B f g h TraVeL rpM WorkpieCe LoaD # # eaCh
2 MT 0.70" 0.88" 0.39" 0.19" 0.11" 5,000 150 lbs. 150 lbs. 10532 69-204-132 $450.99
3 MT 0.94 1.16 0.55 0.25 0.14 5,000 260 315 10533 69-204-133 518.99
4 MT 1.23 1.38 0.63 0.38 0.18 4,500 580 435 10534 69-204-134 615.99
5 MT 1.75 2.00 1.10 0.50 0.19 4,500 1,050 785 10535 69-204-135† 861.99
†Ships direct from factory.
Helpful Hints for CHoosing A live Center

Choosing a live center doesn't have to be a difficult job. royal offers a wide array of different styles, but following these basic steps will help you determine
which live center is best for your type of work.
1. Determine the machine's taper. Most lathes have Morse tapers, with extended points offer additional tool clearance often
while Jarno and Brown & Sharpe tapers are common on many needed on CNC lathes, but there is a workpiece weight trade
grinders. This information can often be found in the owner's manual. off. Carbide-tipped points are available for applications where
point wear is a problem.
2. Determine the weight of the workpiece, including anticipated
cutting forces. Royal gives a value for the maximum workpiece 5. Determine the required operating speed. Many lathes don't
weight each center can handle safely. Be wary of manufacturers who reach speeds exceeding 3,000 RPM, which is no problem for
only give a value called “Load Rating”, and then say the workpiece most Royal centers.
weight is less than half this rating. How much less than half is
necessary to be safe? 6. If more than one center seems as if it will suit your needs,
remember this – “You get what you pay for.” It is better to invest
3. Determine the thrust load necessary to keep the part firmly seated a few dollars now for a center that will do the job and last than it
on the center. Typically this value must be 2/3 of the workpiece is to pay later for out-of-tolerance parts or machine downtime.
weight, including cutting forces. Once again, Royal calls out the
maximum thrust load for each center while other manufacturers do
not. “America's Best”
4. Determine the point style which best suits your needs. Centers