ALTRA INDUSTRIAL MOTION High Precision Planetary Gearheads An Altra Industrial Motion Company

Applications Features Selection Guide Boston gearheads provide precise, durable and long-lasting performance The Boston Gear line of servo gearheads has been designed for direct attachment to popular servomotors. Power is transmitted from the motor to a sun gear which drives three planet gears contained within an in- ternal toothed ring gear. The planet gears are mounted in a carrier with double wall supports. The output shaft automatically rotates as the planet gears and carrier rotate. Due to the load sharing attributes of multiple tooth contacts, planetary gearboxes provide the highest torque...

Boston Planetary Gearheads are designed for a wide variety of applications Machine Tool Paper Converting Many applications typically associated with conventional power transmission solutions are beginning to utilize servo control and precision gearheads to meet production requirements. Servo-driven solutions can achieve faster speeds with more precise accuracy while providing greater flexibility and quicker changeover.

Boston gearheads... the most robust gearheads available. Superior engineering and design combined with the latest technology have resulted in the creation of a full line of gearheads loaded with enhanced features. Patented planet carrier design, patented input and output sealing designs and special heat and surface treatments are just a few of the unique features that give Boston gearheads a competitive edge.

Patented output sealing systems design Equipped with solid uncaged needle roller bearings, provides maximum contact points to increase stiffness and generates high output torque. eliminates friction and heat generation which is accomplished by applying a hi-tech Titanium Carbon Nitride coating to all output contact surfaces. The TiCN coating reaches a hardness of 3000Hv and is ground to Ra 0.2µm finish to ensure sealing. Patented planet carrier design places the sun gear bearing directly into the planet carrier. This ingenious concept eliminates gear misalignment and gains the highest accuracy...

Selection of the Optimum Gearbox Cycle Operation Selection Start Continuous Operation Calculate the Mean Output Calculate the Mean Output Select a Larger Gearbox Select a Smaller Ratio i in Larger Motor if Needed Calculate the Mean Output Speed n2m and the YES Nominal Output Speed n2N of Gearbox (Eq.5) \ Select a Larger Gearbox Motion Profile Index : a. Acceleration, c. Constant, nm Output Speed of the Motor nwork Working Speed Calculate the Mean Radial F2m and Axial Loads FM on Output Shaft of Gearbox (Eq.6) Calculate the Permitted Radial F2rE and Axial Loads fm on Output Shaft of Gearbox Select...

PL2 Series Stainless Steel High Precision Inline Planetary Gearboxes Dimensional drop-in for Bayside Stealth PS Series Ordering Number System for PL2 Models PL In-Line/ Right Angle PL: Precision Gearhead In-Line PR: Precision Gearhead Right Angle Case Size Shaft Type SS: Smooth Shaft KS: Keyed Shaft S: Standard 5 arcmin M:: Mid-grade 3 arcmin P: Premium 1 arcmin Based on servo motor make and model. Input Shaft Inner Diameter Based on servo motor make and model. Note: Other ratios are available upon request SS Standard output shaft KS Output shaft with key (Keyway: Standard DIN 6885)

PL2 Series Features Stainless steel 416 special non-electrolysis nickle surface treatment Integrated helical internal ring gear Patented output sealing systems design One piece planet carrier with output shaft design Lubricated with Nyogel 792D (Smart Grease) Plasma nitriding True helical gear design Triple split collet with dynamic balanced set collar clamping sytem. Unique motor adaptor and bushing module system. Deep groove ball bearing Advanced gearing technology crowns lead of each gear tooth Patented input sealing system design

Gearbox Inertia Model No. 1. Ratio (i=Nin/Nout) *S1 service life 10,000 hrs

PL2 Series Dimensions (1-stage, Ratio i = 3-10) K Note: Dimensions shown in mm 3. C1~C10 are motor specific dimensions (metric std shown). * PL2060 ratio 5,10 provides C3 ≤ 16 option. * PL2090 ratio 3~10 provides C3 = 24 option.

PL2 Series Dimensions (2-stage, Ratio i = 15-100) K Note: Dimensions shown in mm 4. C1~C10 are motor specific dimensions (metric std shown). * PL2060 ratio 15-50 provides C3 ≤ 12 option. * PL2090 ratio 15-50 provides C3 ≤ 16 option. * PL2115 ratio 15-100 provides C3 = 24 option.

PL2 Series Radial and axial loads allowed on the output shaft The permitted radial and axial loads on the output shaft of the gearbox is dependent upon the design of the gearbox supporting bearings. The Boston Gear PL2 Series uses an oversized, straddle mount, ball bearing design, which can take heavy loads from both axes. F2r Radial Load F2a Axial Load If the radial force F2r is exerted on the center of the output shaft, then X=0.5 x L. PL2220 Under these conditions the permitted radial load can be determined from the graph on the left. The permitted axial load can then be calculated by using...

PR2 Series Stainless Steel High Precision Right Angle Planetary Gearboxes Dimensional drop-in for Bayside Stealth RS Right Angle Series Ordering Number System for PR2 Models PR In-Line/ Right Angle PL: Precision Gearhead In-Line PR: Precision Gearhead Right Angle Case Size Shaft Type SS: Smooth Shaft KS: Keyed Shaft S: Standard 5 arcmin M:: Mid-grade 3 arcmin P: Premium 1 arcmin Based on servo motor make and model. Input Shaft Inner Diameter Based on servo motor make and model. Note: Other ratios are available upon request S1 Standard output shaft KS Output shaft with key (Keyway: Standard DIN...

PR2 Series Features • igher output torque rating by using spiral bevel gear design. 30% H more than straight bevel gear. • igh tensile low weight single piece aluminum alloy housing for H highest stiffness. • Allows input speeds up to 8 times than with straight bevel gearing. • Maintenance free lifetime lubrication. • mproved load sharing through precision tooth design and longer I • Patented sealing design for high speed and continuous running. service life. • High efficiency up to 95%. Low noise level down to 61dB. • round gears verified with sophisticated software, ensures G • Most ratios...