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Sprockets

Graetz Mfg., and it's family predecessors have manufactured sprockets and gears for over 70 years.
Please call Graetz to satisfy all of your sprocket and gear needs.
All stock sprockets are available in quantity discounts.

ALTERED SPROCKETS MAY NOT BE GROUPED WITH OTHERS FOR QUANTITY DISCOUNTS.

Sprockets are priced with B style (hub on one side of sprocket) and stock blank bores no finished bores keyway or set-screws. All sprockets may be purchased in many configurations (bored, keyed and set-screwed, splined bores, bearing bore, engineered type, taper locks, steel split sprockets, hardened tooth, double roller chain, triple roller chain, A plate, B hubs or C hubs). The following charts are for alteration charges to be added to appropriate sprockets. 

All of our products are guaranteed against defects in workmanship and material. We agree and shall have the right to repair or replace without charge any of our products which within one year after shipment is proved to have been defective as to workmanship or material at the time of shipment, provided the purchaser gives immediate written notice of alleged defect. We will not be held liable for any damages or delay caused by said defects and shall not be responsible for the work done, machinery furnished or repairs made by others.

No material will be accepted by us for credit or exchange until written authorization for such return has been made by us.

Our responsibility ceases when delivery is made to the transportation company and claims for loss or damage in transit must be handled by the purchaser with the carrier.  

All prices are subject to change without notice and possession of discount sheets is not to be construed as an offer to sell at prices indicated. 

Orders once accepted are not subject to change and/or cancellation.

All of our sprockets are manufactured, modified and shipped from our factory in Pound, WI.

Alteration Charges

Alteration charges are applied by:

  1. Determining sprocket classification according to Table 1
  2. Adding charges shown in Table 2 according to properly ascertained classification.
  3. Determining percentage of alteration charge to be added to sprocket list price according to quantity of identical specifications.

Altered sprockets MAY NOT BE GROUPED WITH OTHERS FOR QUANTITY DISCOUNTS, and are per items of identical specifications.

REBORE CHARGES: Apply only as follows:

Style B or C - To maximum bore to industry standards.
Style A or C - To bores 4 times the stock bore.

And are limited as follows:

  • All sprockets listed are B type hub
  • Deduct for A style listed on Table 3
  • C type sprockets (hub on both sides) see table 3

Boring tolerances: for bores from 1/2" through 6" and to the following

Up to 2" bore          + .002 - .000"
2-1/16" to 3" bore    + .003 - .000"
3-1/16" to 4" bore    + .004 - .000"
4-1/16" to 6" bore    + .005 - .000" 

KEYWAY CHARGES: Apply only to standard keyways and the following tolerances:

Depth: + .010 - .000" Width: Nominal + .002 - .000"
Tapered Keyways: Double std. Charges
Depth Deep End: -.010 + .000" Width: +.002 - .000"
Non-Std. & Matched Keys - Price on application.

HARDENING CHARGES: Degree of Hardness in tooth or gear profile section

Style B (to 5" O.D.) Rc 40 minimum.
Style A & Style B & C (over 5" O.D.) Rc 35 minimum.
Hardening charges DO NOT include resizing of bore after heat treatment.

Therefore, to price hardening charge of SR or Bushed Type sprockets a Rebore and Hardening charge is to be applied to the corresponding SR or Bushed Type list price according to Style B coding.  

ALTERATION CHARGES
STYLE B HUB ONE SIDE

Table 1 – Modification Classification

Sprocket Range Modification Code Sprocket Range Modification Code
25B9 to 25B32 G 1 80B8 to 80B25 G 3
25B33 to 25B72 G 2 80B26 to 80B50 G 4
35B8 to 35B30 G 1 80B51 to 80B80 G 5
35B31 to 35B54 G 2 80B81 to 80B96 G 6
35B55 to 35B112 G 3 80B97 to 80B112 G 7
41B8 to 41B36 G 2 100B8 to 100B25 G 4
41B37 to 41B84 G 3 100B26 to 100B32 G 5
41B85 to 41B120 G 4 100B33 to 100B84 G 6
40B8 to 40B36 G 2 100B85 to 100B96 G 7
40B37 to 40B84 G 3 120B9 to 120B25 G 4
40B85 to 40B120 G 4 120B26 to 120B30 G 5
50B8 to 50B29 G 2 120B31 to 120B60 G 6
50B30 to 50B70 G 3 120B61 to 120B80 G 7
50B71 to 50B112 G 4 140B11 to 140B26 G 5
60B8 to 60B20 G 2 140B27 to 140B60 G 6
60B21 to 60B42 G 3 140B61 to 140B70 G 7
60B43 to 60B70 G 4 160B8 to 160B21 G 5
60B71 to 60B112 G 5 160B22 to 160B45 G 6
Engineered sprockets G 3 160B46 to 160B60 G 7

Table 2 - Modification Charges According to Above Classifications:

Modification Code Rebore Keyway Set-screw Harden tooth option
G 1 $ 5.00  $ 2.50  $ 2.50 # 35 @ .11 per tooth
G 2 6.00 3.00 2.50 # 40 @ .19 per tooth
G 3 7.00 3.50 3.00 # 50 @ .28 per tooth
G 4 9.00 4.00 3.50 # 60 @ .50 per tooth
G 5 10.00 5.00 4.00 # 80 @ .74 per tooth
G 6 12.00 6.00 5.00 # 100 @ .95 per tooth
G 7 15.00 7.00 6.00 # 120 @ 1.15 per tooth
        # 140 @ 1.15 per tooth

Harden tooth option:

# 160, # 180, # 200 and # 240, please call for quote
*Hardening charge applies only to sprockets with 50 teeth or less. For sprockets with more than 60 teeth - please request a quote for price on application.
Engineered sprockets included the following: Flame cut steel apron sprockets and cast iron apron sprockets.

Table 3 - Modification Charges According to Above Classifications:

Adjustments are to cover welding and raw material.

Modification Code C style hub add-on A style deduct Stock hub range
G 1 $ 3.00 $ .00 1” -- 2-1/4”
G 2 5.45 .50 1-1/8” – 3-1/4”
G 3 6.75 1.75 3-1/4” – 4-1/2”
G 4 14.50  2.50 3-3/4” – 4-1/2”
G 5 17.00 3.50 4-1/2   – 7”
G 6 22.00 3.90 5-1/4   – 8”
G 7 26.00 4.25 6-1/4” – 8”

Drilled holes

bolt patterns under 9/16” dia holes  tapped holes 3/8” – ½” Drilled 5/8” – 1-1/4”
$ 1.25 per hole $ 1.75 per hole $ 3.25 per hole

Splined bore applications available, please call.

Splined shafts to match sprockets available.

Alteration charges above are to be added to appropriate sprocket list price as follows:

1 pc.             Add full alteration charge.
5 - 10 pcs.     Deduct 5% of alteration charge.
10 - 20 pcs.   Deduct 10% of alteration charge.
20 - 30 pcs.   Deduct 20% of alteration charge .
30 - 40 pcs    Deduct 30% of alteration charge.
40 & up         Request Price on application.

Example: Total altered charge for 2 pieces of a 60 B 18 bored to 1.25", keyed and set-screwed.

60 B 18 Base Sprocket    2 @ $12.26 =   $24.52

Modification Code - G2:

Bore 2 @ $6.00 = $12.00
Key 2 @ $3.00 =    6.00
SetScrew 2 @ $2.50 =    5.00
Total Modification $23.00
Plus base $24.52
  = $47.00 for sprockets
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