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Part Number System

Our part numbering system allows you to tell the specifications of an item from the various digits.  The first two digits can tell you what type of part it is.  Click on number to open related PDF catalog pages.

01 - Sprocket w/o Hub
03 - Adapter Hub
04 - Slip Hub
05 - Sprocket, Slip Hub
06 - Pinion, Stainless Steel
07 - Pinion, Circular Pitch
09 - Sprocket, w/ Taperlock bore
11 - Sprocket w/ Hub
12 - Sprocket, Cast Iron
13 - Chain Coupling
15 - Roller Chain
16 - Tensioner Sprocket
17 - Tensioner
19 - Slide Rails
20 - Pinion Shaft
21 - Pinion, Soft
22 - Pinion, Plastic
23 - Pinion, Soft
24 - Pinion, Hardened & Ground
25 - Rack, Soft
26 - Rack, Plastic
27 - Rack, Induction-Hardened
28 - Rack, Hardened & Ground
28.X5 - Rack, Hardened & Ground, StrongLine
28.0 - Rack Mounting Screws
29 - Rack, Helical Hardened & Ground
29.X5 - Rack, Helical StrongLine
29.0 - Rack Assembly Kits
31 - Timing Pulley
32 - Timing Belt
33 - Rack, Quenched & Tempered
34 - Rack, Induction-Hardened
35 - Rack, Round
36 - Rack, Stainless Steel
37 - Rack, Circular Pitch
38 - Rack, Helical Quenched & Tempered
39 - Rack, Helical Induction-Hardened
40 - Bevel Gear Set
45 - Worm Gear Set
46 - Rack, Hardened & Ground
47 - Rack, Helical Soft

48 - Rack, Helical Hardened & Ground
49 - Rack, Integrated
50 - Bevel Gearbox
51 - Servo-Bevel Gearbox
52 - Bevel Gearbox, Spiral Light Duty
53 - Bevel Gearbox, Spiral Heavy Duty
54 - Bevel Gearbox
56 - Standard Worm Reducer
57 - Servo-Worm Reducer, B-Series
58 - Servo-Worm Reducer, HP-Series
59 - Servo-Worm Reducer, E-Series
60 - Screw-Jack Gearbox
60.9 - Accessories, Screw-Jack Gearbox
61 - Screw-Jack Gearbox
65.0 - Output Shaft
65.4 - Input Coupling, Servo-Worm Reducer
65.5 - Input Coupling, Servo-Worm Reducer
65.59 - Input Flange, Servo-Worm Reducer
65.8 - Automatic Lubricator Assembly
65.9 - Lubricant
65.91 - Automatic Lubricator
67 - Splined Shaft
68 - Splined Adapter
69 - Splined Shafts
70 - Universal Joint
71 - Coupling
74 - Split-Pinion Shafts
78 - ISO Flanged Pinion
79 - Splined Pinion
80 - Bushing
80.8 - Output Coupling, Compression
83 - Ball Screw Spindle
84 - Nut, Ball Screw
85 - Threaded Spindle, RH
86 - Threaded Spindle, LH
87 - Nut, Threaded Spindle, RH
88 - Nut, Threaded Spindle, LH
98 - Servo-Worm Reducer, HT-Series
204 - Spare Part, Slip Hub
265 - Adapting Flange

  • Servo-Reducer
    Part Numbers
  • Rack Part
    Numbers
  • Pinion Part
    Numbers
First Two Digits: Middle Two Digits: Last Three Digits:
51 - Servo-Bevel (BG)
57 - Basic (B)
58 - High-Performance (HP)
59 - Economy (E)
98 - High-Torque (HT)

First Digit - Output Type:

0 - Keyed (HP, E, B, BG), ISO Flange (HT)
1 - Compression

4 - Keyed (HP, E, B), ISO Flange (HT) - OLD STYLE
8 - Compression - OLD STYLE

Second Digit - Reducer Center Distance:

1 - 32 mm
3 - 50 mm
4 - 63 mm
5 - 80 mm
6 - 100 mm
7 - 125 mm

First Digit - Motor Flange

Last Two Digits - Ratio:

05 - 4.75:1
07 - 6.75:1
09 - 9.25:1
15 - 14.5:1
20 - 19.5:1
29 - 29:1
39 - 39:1
50 - 50:1
51 - 51:1
52 - 52:1
53 - 53:1

First Two Digits: Middle Two Digits: Last Three Digits:

25 - Rack, Soft
26 - Rack, Plastic
27 - Rack, Induction-Hardened
28 - Rack, Hardened & Ground
28.X5 - Rack, Hardened & Ground, StrongLine
28.0 - Rack Mounting Screws
29 - Rack, Helical Hardened & Ground
29.X5 - Rack, Helical StrongLine
29.0 - Rack Assembly Kits
33 - Rack, Quenched & Tempered
34 - Rack, Induction-Hardened
35 - Rack, Round
36 - Rack, Stainless Steel
37 - Rack, Circular Pitch
38 - Rack, Helical Quenched & Tempered
39 - Rack, Helical Induction-Hardened
46 - Rack, Hardened & Ground
47 - Rack, Helical Soft
48 - Rack, Helical Hardened & Ground
49 - Rack, Integrated

First Digit - Module Size:

1 - Module 1.0
15 - Module 1.5
2 - Module 2
25 - Module 2.5
3 - Module 3
4 - Module 4
5 - Module 5
6 - Module 6
8 - Module 8
10 - Module 10
12 - Module 12

Second Digit - Mounting Holes:

0 - With Holes*
1 - Without Holes*
5 - StrongLine with Holes

*except for 25, 33 & 38-Series

Rack Length:

025 - 250 mm
05X - 500 mm
10X - 1,000 mm
15X - 1,500 mm
20X - 2,000 mm
300 - 3,000 mm
999 - Companion Rack

First Two Digits: Middle Two Digits: Last Three Digits:

06 - Pinion, Stainless Steel
07 - Pinion, Circular Pitch
20 - Pinion Shaft
21 - Pinion, Soft
22 - Pinion, Plastic
23 - Pinion, Soft
24 - Pinion, Hardened & Ground
74 - Split-Pinion Shafts
78 - ISO Flanged Pinion
79 - Splined Pinion

First Digit - Module Size:

1 - Module 1.0
15 - Module 1.5
2 - Module 2
25 - Module 2.5
3 - Module 3
4 - Module 4
5 - Module 5
6 - Module 6
8 - Module 8
10 - Module 10
12 - Module 12

Second Digit - Bore Code

First Digit - Style:

0 - Spur
3 - Helical
4 - Spur
5 - Helical

Last Two Digits:

Number of Teeth